If your tube didn't fill
If your collection tube is having trouble filling, message Rythm's customer sxperience team at [email protected] or through the Live Chat.
Why the fill level matters
The lab needs enough usable sample volume to run all of your tests. A tube can look like it has enough blood and still not have enough usable sample for testing.
If your device is still on your arm
If blood is coming out slowly, you may still be able to finish your collection:
Give it time. Your vial may take up to 10 minutes to fill.
Press the red button again. If no blood appears after 2 minutes, press the red button again.
Add warmth. Place the warm heat pack around the device to help blood flow.
Relax your arm. Let it hang naturally below your heart. Don't flex your arm or squeeze around the device.
If the tube still isn't full after 10 minutes, text our team at +1 (866) 740-3447 or message us directly through the Live Chat so we can assist.
Tips for a successful collection
These steps can help your tube fill more easily next time:
Drink water. Begin hydrating 24 hours before you collect and have a glass of water 30–60 minutes before collecting.
Warm your upper arm. Use the heat pack for 4 minutes. Warmth increases blood flow.
Let the alcohol dry completely. This helps the device stick well, which it needs to draw your blood.
Place the device correctly. Put it on the fleshy area of your upper arm, following your test instructions. If blood flow has been tricky before, try placing it a little lower on your upper arm, still above the elbow.
Avoid certain areas. Don't place the device over a recent injection site, where skin may be irritated, or an area where you apply topical hormones.
Keep your arm relaxed. Let it hang naturally during collection.
After collecting, cap the tube and gently invert it about 10 times. Don't shake it.