I was positive and then I tested in Mt Sinai, and BH I have high antibodies. I also tested negative. They told me they would call me back because I am a candidate to give blood, I think they called me on Pesach.
I'm interested in donating. My blood type is a positive. Please PM me for more information. I live in Flatbush but I can go anywhere if it's for Hatzolas Nefoshos