Dear Dr., I've written you before about my situation. If you look back my histories go back approx. 15yrs. Last exposure was in 2009. I've tested mult. times for HIV syphilis and other STDs. All of the test have been negative. These have been HIV AB of mult types, HIV duo, HIV-1 DNA, HIV-2 DNA, HIV-1 RNA, HIV-1 western blot. I've also had mult syphilis test including RPR, FTA-ABS, TP AB, &syphilis EIA.