AB- here, pretty rare and get a call at least every half a year. They love it how they can easily see my veins and acually get a needle through. I'm high on the blood pressure scale (like the entire side of my dads) but control it by barely eating sodium, but that's impossible for fat fucks Sidenote:  Friend of mine really wants to donate blood, but because he's gay he can't. That shit is pretty fucked up