I had Hep B in '77 and was hospitalized for 2 weeks. In 1999, I had a liver work up done which showed core positive - surface negative. I have numerous cysts on my liver. I received 1 HBV vaccine and formed surface antibodies but still showed core positive. In 2005, I had blood work done which showed high levels of HBV antibodies and core negative. Is that an indicator that I could be an organ or blood donor? Gastro said there was no indication of ever having HBV, so I asked her if I could donate and she said she did not know.