If Hepatitis B antigens are negative on a titer test does this mean you have had your Hep B vaccine?

Question

HELP!!!

Answer 1

HBsAg- an antigen test - is to see if you have had Hepatitis B - it is not the test to see if you have Hepatitis B antibodies (acquired from being infected or immunized).

Answer 2

A negative test for hepatitis B antigen only means that you are NOT a chronic carrier and DONT have acute hepatitis. It tells you nothing about your prior vaccination.

If you want to know if you are immune (by vaccination or by prior infection), then you need to knwo what your hepatits B ANTIBODY status is. I'm sure your doctor did this test at the same time as the antigen test. If your hepatitis B antibody is also negative, youre not immune and need vaccination. If the antibody is positive, you are immune and dont need a vaccination.

If you had vaccination, youre probably wondering why you need the antibody test. the reason is because about 10% of people dont respond to the series of three shots. these folks just need a fourth.

http://www.webmd.com/hw/hepatitis/hw201572.asp

Answer 3

Hepatitis B ANTIGEN tests to see if you have the actual hepatitis B infection or not. If you want to see if someone has been vaccinated you have to check hepatitis B SURFACE ANTIBODY, not the antigen. A positive antibody test means either you have had hepatitis B in the past and "got over it" OR you have been vaccinated. Over 90% of vaccinations produce the antibody, but not all people respond to the vaccinations. Either way, if someone has SURFACE ANTIBODY then they are "immune" to infection by hepatitis B unless something dramatic happens to weaken their immune system, for example a bone marrow transplant. If someone has positive ANTIGEN then they have the disease and are infectious.

Answer 4

i don't believe so. get the vaccine again just to make sure. it can't hurt

Answer 5

nope, they would react if you had the hep in ur body