Doctor,
I had a potential exposure to HIV while traveling through Russia and became very scared. Upon arrival in China, where I was living at the time, I took the HIV test three times - 5, 7, and 15 weeks post exposure. All negative. Is there any reason that I should not trust those results. Are you aware of what techniques are now being used in China? It has been about a year since that last test and I haven't had any dangerous experiences that could potentially lead to an STD and I am now back in the US. Should I get tested again or just trust the China results?