The best time to test for HIV with nucleic acid is within 7-10 days or 1-3 weeks after high-risk behavior, although it is certainly possible to test for more than 3 weeks.
Nucleic acid testing for HIV is a more accurate way to detect the virus. When the body is infected with HIV, the virus invades T-lymphocytes and multiplies in them, and the HIV nucleic acid in the blood may become higher and higher. By testing HIV nucleic acid, we can know whether there is HIV infection in the shortest time and thus make an early diagnosis. If the result of the nucleic acid test is positive, it indicates HIV infection; if the result is negative, it can basically exclude HIV infection. However, it is important to pay attention to the window period. It is recommended to review the HIV-related antibodies regularly for about 3-6 months, and if the test continues to be negative, HIV infection can be basically ruled out.
Once there is a high-risk behavior that may be infected with HIV, you must go to the infection department or dermatology department of a regular hospital in time to improve the relevant examination. In addition, you must be clean and avoid unsafe sexual behavior.