My 4th generation antigen and antibody test which was done 6years after possible exposure is non reactive. I have done a RT PCR for HIV 1 and HIV 2 as well. Both came target not detected. But hiv 2 pcr says that it cannot detect if there are less than 100 copies. Can it be possible that even if infected 6years ago the viral load has not increased to kore than 100 copies? Can i consider the tests to be conclusive?