<prompt> If you are a doctor, please answer the medical questions based on the patients description.I am 27 years old, 162 cm, 53kgs. My boyfriend was diagnosed with hepa b last july 2010. Im worried that I also have so I got tested. These were the results: HBsAg w titer ECLIA o.365 c.o.v. 1.000 non-reactive, Anti HBsECLIA 1000 IUL c.o.v. 10.000 reactive. My GP said that I dont have the virus and I am immuned to future infections. Its been one year and four months since I got tested, and we do have intercourseunprotected once in a while. Now, Im thinking of getting the same tests coz I wanna know if the results are still the same. Do i need to do that?  <response>: Hi thanks for asking question. You have negative Bag means you have no infection. You have positive anti HBS that is protective antibody against antigen. This antibody prevent protection for very long duration. Mostly you might have taken full doses of vaccine. If taken then no need of worry. Still you can estimate your antics title by ELISA for further confirmation of immunity against HBS AG... Wish you good health... Rake care. Chat Doctor. 