You can learn everything you need to know from their web site.
Learn How to Donate Bone Marrow | Be The Match<https://bethematch.org/support-the-cause/donate-bone-marrow/>
Recruiting new registry members ages 18 to 44 to become a donor and learn the steps of the donation process.
If you are a stem cell donor, it does not hurt very much. Primarily is a big needle stick.
Kenneth Myron Braunstei, MD
You can join the bone marrow registry here: https://bethematch.org
Bone marrow donation is now done via peripheral blood with a leukopheresis machine after treatment with growth factors.
In other words, they will give you a bone marrow booster to make your stem cells come out to your blood stream, then you get hooked to a pheresis machine (similar to the one used for platelet donation) and they collect your stem cells (called CD 34 cells).
That sample gets frozen until it is ready to use. They will not poke your hip or breast bone.
Hope this is helpful.