It usually takes 2 to 12 weeks after infection with the hiv virus for hiv antibodies to be detected in the blood, and the average time for antibody production is about 45 days. The hiv virus is also known as the AIDS virus. There is a certain window period for HIV infection, during which antibodies can be undetectable, so false-negative results may occur. Generally after the window period can be detected in the body of the AIDS virus, so the infected person generally the earliest 2 weeks after the antibody can be detected, as late as 12 weeks after the antibody can be detected to the AIDS virus, each person window period length is not the same, the antibody can be detected in the time there is a difference. Therefore, if you suspect that you have HIV infection, you can go to the hospital as soon as possible after the high-risk contact to check the antibody to further clarify, and block it in time.