• Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]

  • Getting Started

    Watch the video walkthrough or swipe to see step-by-step instructions.

  • Step 1

    A simple illustration of hands rubbing together with a blue textured area between them, suggesting warming or cleaning.

    Wash your hands. Remove all items from the white Rythm bag and arrange them neatly on a clean surface in front of you.

  • Step 2

    A simple line drawing of a labeled plastic bag with a QR code on the front.

    CRITICAL STEP

    Scan the QR code on your sample bag before you begin. Then follow the prompts on your device.

  • Step 3

    A line drawing of a labeled plastic bag with a QR code on the front and a pencil shown beside it, indicating where to write your date of birth.

    CRITICAL STEP

    Write your date of birth on the sample bag.

  • Step 4

    Tear open your gauze, alcohol wipe, and bandaid now so they are ready when you need them.

  • Step 5

    A line drawing of a hand peeling off the circular adhesive backing from a red blood collection device.

    Remove the clear cap from the red button.

  • Step 6

    A line drawing of hands twisting and pulling off the green cap from a small collection tube.

    Grip the green cap, twist it clockwise, then pull upward to remove the lid from the sample tube.

  • Step 7

    A line drawing of hands inserting a small collection tube into the bottom of a round red blood collection device.

    Position the tube with the line at the top, facing you. Firmly insert the raised end into the base of the red-button device until it seals securely.

  • Step 8

    A simple line drawing of a person pressing a small device against the back of their upper arm.

    Clean your upper arm with the green alcohol wipe. Let the skin air-dry before proceeding.

  • Step 9

    A line drawing of two hands pressing the center of a round device from opposite sides.

    Activate the circular heat pack by pressing your thumbs on the raised side of the silver coin until it “pops” like bubble wrap.


    The gel inside will crystallize. You may need to press and release multiple times to fully activate.


    Tip: Don’t try to break the coin.


    For a visual guide, watch the instruction video.

  • Step 10

    A simple line drawing of a person pressing their hand over a circular spot on the back of their upper arm.

    Hold the activated heat pack on your upper arm for 5 minutes.


    If it feels too hot, remove it for a few seconds before reapplying. If the pack doesn’t produce heat, use a warm compress or rub your arm for a few minutes to warm the collection area.

  • Step 11

    A line drawing of a person with a round red blood collection device attached to their upper arm, while a hand removes the inner mechanism from a second device.

    Peel off the adhesive backing from the red-button device and press it onto your upper arm.


    It will stick on its own—no need to hold it.


    Make sure the sample tube points down along your arm toward the floor. Let your arm hang loosely by your side and take a few breaths to relax.

  • Step 12

    A line drawing of a person pressing on the round red blood collection device attached to the side of their upper arm.

    Press the red button fully with two fingers until you hear a click, then release.

  • Step 13

    A line drawing of a person with a round red blood collection device on the side of their upper arm, with an arrow pointing upward to show the device should fill to the top.

    Set a timer for 5 minutes and wait for blood to fill the tube all the way to the top.


    Blood may appear immediately or take up to 5 minutes.


    If no blood appears after 5 minutes, press the red button again. Note: If after 10 minutes the tube still isn’t full, complete Steps 14–23, then text the Rythm team at +1 (866) 740-3447.


    Do not ship the kit if the tube is only partially filled.

  • Step 14

    A line drawing of a person peeling the round red blood collection device off the side of their upper arm, lifting it from one side to the other.

    Remove the device by gently peeling it off from either side.


    There’s no needle—only adhesive. Then place it on a clean surface with the red button facing down.

  • Step 15

    A line drawing of a person pressing a gauze pad against the side of their upper arm after removing the device.

    Raise your elbow to a 90° angle. Place the gauze over the collection site and apply firm pressure for 1 minute.

  • Step 16

    A line drawing of a person with a small bandage on the side of their upper arm, shown next to a clock icon and the text “24–48 Hours,” indicating the bandage should stay on for at least a day.

    Apply the black Rythm bandaid and leave it in place for 24–48 hours to promote optimal healing.

  • Step 17

    A line drawing showing hands twisting and pulling the small collection tube away from the round blood collection device.

    Remove your collected sample by twisting the tube and pulling it straight down from the device.


    Do not pour any blood out of the tube.

  • Step 18

    A line drawing of a hand pressing the green cap down onto the top of the blood collection tube to close it securely.

    Push the green lid back on your sample tube by pressing down on the top–do not twist. It should snap firmly into place.

  • Step 19

    A line drawing of hands gently inverting a blood-filled collection tube up and down, with “×10” indicating it should be done ten times.

    CRITICAL STEP

    Turn the sample tube upside down and flick lightly on each side until the blood moves from the top to the bottom.

    Gently invert the tube 10 times.

    **Do not shake

    The blood should move from the bottom to the top with each inversion.

  • Step 20

    A line drawing showing the blood collection tube being placed into a black protective case, with the case’s cap beside it.

    Put the sample inside the black Rythm tube protector.

  • Step 21

    A line drawing of the protected blood collection tube being placed into a sample bag.

    Place your sample into the orange sample bag.

  • Step 22

    A line drawing of the sealed sample bag being placed into a labeled return mailer bag.

    Place the orange sample bag (with your sample in it) into the black bubble mailer with the FedEx return label.

  • Step 23

    When you are ready to mail the sample, you have two options:

    1. Drop it off at your nearest FedEx location.

    2. Organize a pick up by texting the Rythm team at
    +1 (866) 740-3447.

    Note: Pick-ups cannot be organized before 8am or after 6pm local time.

  • Step 24

    If you have any questions,
    text us anytime at
    +1 (866) 740-3447

    Alternatively, you can email us at [email protected]