I did apheresis at the Red Cross a few times; I really ought to again. Couple odd things about plasma donation, though. The saline is cold going in and I get shivers, I hate that part. But also, when I donate whole blood I'm fine the rest of the day, but plasma donation kicks my ass. Soooo tired after. I suspect it's because unlike whole blood donation, which reduces volume but doesn't change composition, plasma donation effectively lowers your blood sugar by dilution.

Things that make you go hmmm.