Well, that was interesting

I gave blood last Wednesday. Nothing unusual in that. But this time I let them talk me into undergoing a new procedure in which the blood in drained out, the red cells removed and the liquid returned into my body. The procedure wasn't painful and wasn't (very) uncomfortable. Problem was it took over an hour from the time I lay down until they were finished. I usually give blood in 20 minutes and then back to work. Another problem, I felt kinda crappy for the next 24 hours. No big deal, and it may not have had anything to do with the procedure...but it may have second thoughts when it comes time to do it again.