The bloodmobile comes by my work regularly, and I make it a point to donate each time they're here.
I've always just donated a pint of whole blood, and never really had any side effects.
Today, they asked me to do a "double red" donation since I have type O+. I've never done that before, and after they explained it to me, I said "Sure, why not?".
Basically, they take out some blood, spin it in a centrifuge, and give you back your plasma & white blood cells along with some saline & an anticoagulant. They do this process 4 times until they have an equivalent donation of twice the red blood cells as a normal, whole blood donation.
After doing this today, I am wiped out! I'm tired, lightheaded, had tingling in my upper lip and nose, and just generally feel 'blah'. Anyone else ever done the "double red"?
I'm ready for a nap... lol