I've been told no twice. They knew nothing about me cf wise till I gave them information on the drugs I took, they asked me what I was taking those drugs for, and I told them. The lady made a phone call to someone downtown and in charge, and she told them no. I didn't ask why. It is possible that our blood might be nappy due to all the drugs we are on, atleast for those who might be very ill (needing blood).