Instructions for Joining the Stem Cell Registry
Taking the registration sample is easy to do at home! The sample is taken from the inside surfaces of the mouth.
- Take the online test to find out if you can join.
- Fill out the registration form. Note: use your official postal address.
- Take the registration samples (see the instruction video below) when you receive them by mail.
- Return the registration samples in the return envelope. Postage has been paid for you.
You are a member!
New: Join the Stem Cell Registry at Blood Service donation centers
You can now join the Stem Cell Registry at any of the ten Blood Service donation centers.
Can’t see the video? Watch it on YouTube.
Preparation
- Make sure there is no food or food residue in your mouth. Have an empty and clean glass or mug nearby.
- Open the swab packaging. Always take out only one swab at a time. Do not touch the sample collection tip.
Sample Collection
- First swab: Rotate the swab inside your left cheek for 1 minute. After that, place the swab in the glass or mug with the sample collection tip facing upwards.
- Second swab: Rotate the swab inside your right cheek for 1 minute. Then place the swab in the same glass or mug with the sample collection tip facing upwards.
- Third swab: Rotate the swab inside your lips and also inside your cheek, around the inside of your mouth, for 1 minute. Then place the swab in the glass or mug with the sample collection tip facing upwards.
- Let the swabs dry in the glass or mug for about 2 minutes.
Sending the Samples
- Place all three swabs into the white cardboard envelope as they are and seal it using the adhesive on the envelope. Do not put anything else in the envelope.
- Place the sealed cardboard envelope containing the swabs into the return envelope and send it to the Stem Cell Registry.
- Postage is prepaid, so you can drop the envelope in the nearest orange mailbox of Posti.
Frequently Asked Questions about Joining
Last modified: 12.01.2026