Hi doctor. I am 26 years male. I am circumcised male. I am unprotected vaginal sex single exposer w a girl. Later 9 months found she is hiv positive. I am read aids vancover and official guide lines say that there are only 4 situations where your HIV test window period may be affected. They are: 1) Antiviral treatment for Hepatitis C 2) Treatment for Cancer (Chemotherapy) 3) P.E.P treatment for HIV 4) Other immunodeficiency diseases my first question is to ask is this accurate information? If a person does not have these diseases his duo test is conclusive at 16 months post exposure and a conclusive test results can not change if repeated anytime further (if no further exposure acquired) Hiv lay dormant many years it is true?