After a donor has been asked for an in-depth blood test, it can take a few weeks until it is determined who is a suitable donor for a bone marrow or peripheral blood stem cell donation.

If a donor is suitable due to matching tissue markers and willing to donate blood stem cells, an appointment for the collection and collection type is made. The  donation procedure is decided by the transplant team and the donor always has a right to voice his or her wishes. 

Then about 3-4 weeks before collection at the collection center, a physical exam will be done: only healthy individuals can donate.

When everything is checked thoroughly and the donor is healthy, a transplantation can be performed. It is understood that the donor always retains the right to withdraw consent.