I've been registered as an organ donor since I got my first driver's license @ 17yrs ago. I went on the marrow registry @ 13yrs ago. Whenever I'm eligible, I donate platelets (every 2 weeks), &/or whole blood(every 8 weeks). I always tell them to take what they want and just leave me with enough fluids so I can get home.
2 weeks ago I got a call as a matched donor for luekocytes (white blood cells). I had to take meds for that one, and the donation comes out kinda lookin like a tequila sunrise.
Right now I'm working on a cross-promotional fund raiser between my business & the Red Cross.
More important than raising money is raising awareness. There is no substitute for the things that come out of the human body like blood and organs.
So give it up; you'll just make more.