I have taken three 4th gen tests (ELFA, ECLIA AND CMIA), three
hiv antibody tests alongwith HIV RNA Qualitative test for a possible exposure 10-11 years ago from reputed labs such METROPOLIS, ATULYA , THYROCARE and SRL, and all tests came out negative/ not detected. How conclusive and reliable the test results be considered or further tests are required or could these tests be false negative for such an old exposure?