I gave bone marrow to one of my nephews who had cancer. It was not a fun experience. I was not asleep for the procedure. In fact I don't think it was even offered. Anyways I watched the large bore needle as it was lowered into my leg and then screwed into the bone. Not fun. Person who did it was very good and we got everything needed as quickly as possible. If called to do it again I would be put to sleep but I am getting so tired of procedures. Getting a sample from the hip should be easier but they needed a much larger volume for the boy.