I have had sex with a female friend who is high risk of having hiv. i want to have a hiv test. when should i go for hiv test and what type of test i n?

See your doctor: Your doctor will help guide you on the timing and the type of HIV test you will need.

Duo test at 4+ weeks: Have an antigen-antibody (4th generation, "duo", "combo") test, which is conclusive any time 4 weeks or more after exposure. You can expect a negative result: the average transmission risk for the mail partner from a single episode of vaginal sex, if the woman is infected, is roughly 1 in 2,000. Much lower with a condom, which of course you should have used with a high risk partner. Good luck!