I'm at 10 gallons + 1 pint. They have the machine that removes, seperates, (whatever it is), returns, removes, etc. (one visit counts as two donations). I am O neg, and they wont use that machine on me, they want the whole pound. (pint!). My 1st was in basic training (USAF) in the '60's, we got a day off for our donation, piece o' cake. -corne-