The colloidal gold test for HIV takes about 12 weeks to completely rule out because the window period for HIV antibody testing is usually 4-12 weeks. The colloidal gold method of HIV detection is mainly through the detection of human whole blood, plasma and serum in the presence of HIV antibodies. HIV infection stimulates the body to produce HIV antibodies, and most of the antibodies are produced in about 4-6 weeks after infection. 1 positive HIV antibody test within the window period does not confirm HIV infection, and it is necessary to go to a regular medical institution for retesting, and if the results of the two tests are both positive, AIDS infection can be diagnosed. If the test result is negative within the window period, HIV infection cannot be ruled out. It is necessary to take another test after the window period of HIV, and if the result is negative, HIV infection can be ruled out. If the result is negative, HIV infection can be ruled out. After the occurrence of high-risk, you need to consult a doctor in a timely manner, and follow the doctor’s instructions to do the HIV test, and do a good job of self-protection.