My boyfriend has been living with a positive girl and he had 10 sexual encounters with her,3 of them unprotected. Hes been tested on an ongoing basis for a year and a half. Is it enough to have a definite result ? Is it possible to become positive in the future ? Please answer to this e-mail . I want to be anonimous if it is possible. I dont have a clear information about the window period. 3 months, 6 months, a year ?

Most people will develop a detectable level of antibodies in about 25 days following exposure, and the vast majority will have detectable levels at three months (estimates of accuracy at three months are as high as 99.9% accurate). Many experts agree--including those at the New York City Department of Health and the Gay Men's Health Crisis--that testing at three months is sufficient. The CDC suggests that people get tested at six months to rule out the rare, but possible, chance that someone receives a false negative at three months; testing at six months following exposure is usually recommended for someone who was DEFINITELY exposed to HIV infected fluids.

Any testing beyond six months is definitely unnecessary.

RMK