Before 16 years, I had lots of high-risk exposures. Before seven years, I started having lots of various symptoms that I have to this day. At that time, I ceased my activities and got tested. All STD(Sexually Transmitted Disease)s tests were negative, but I continued to have symptoms. I can say that I have had many (over 40) HIV (Human Immunodeficiency Virus) tests along with syphilis tests. Like I said, no risk exposure for the last seven years. Before four years, I have had HIV third, and fourth generation tests. I also have had proviral HIV 1 and 2. I have had Abbott Real Time RNA as well as western blot, and they have been negative. In the last six years, I have also had many syphilis tests, and everything has been negative. As I was still having symptoms, I tested again, and it includes FTA (Fluroscent Treponemal Antibody), RPR (Rapid Plasma Reagin) and TPPA (Treponema Palladium Particle Agglutination). The RPR and TPPA were negative, but FTA was positive. I freaked out and checked after some weeks, and all were negative.My doctor said that one incident was a false positive. I have not tested since. Am I HIV negative Can HIV tests miss any HIV strains or subtypes? What is the absolute window period for HIV? Can I be certain that I do not have syphilis? What is the absolute window period for syphilis? Do I need any other tests?