If you had a 4th generation DUO test at 28 days post exposure, you are negative.
Im not sure that was the test done. I think the doctor just mentioned testing for antibodies? Is that 4th generation?
Heu said it was just for antibodies.
Ok thanks. He said that I should test at three months but I should relax because it is highly unlikely it will change. Is this normal in most cases?
This is what the CDC website states. If you are only testing for antibodies...Then the test needs to be confirmed at 90 days. If you are doing a 4th generation antibody & antigen test (blood drawn from vein). CDC states 18 to 45 days.
A nucleic acid test (NAT) can usually tell you if you are infected with HIV 10 to 33 days after an exposure.
An antigen/antibody test performed by a laboratory on blood from a vein can usually detect HIV infection 18 to 45 days after an exposure.
Antigen/ antibody tests done with blood from a finger prick can take longer to detect HIV (18 to 90 days after an exposure). When the goal is to tell for sure that a person does not have HIV, an antigen/antibody test performed by a laboratory on blood from a vein is preferred.
Antibody tests can usually take 23 to 90 days to reliably detect HIV infection. Most rapid tests and home tests are antibody tests. In general, antibody tests that use blood from a vein can detect HIV sooner after infection than tests done with blood from a finger prick or with oral fluid.