A 6-week negative triple antibody test can basically rule out AIDS (the disease). However, it is not absolutely ruled out, you need to test again with a test strip after 12 weeks to rule it out accurately.
The three-generation antibody test can be done 2 weeks after high-risk sex, 4 weeks after the test, and 6 weeks after the test. If they are all negative, then the chance of AIDS is not very high, and in order to rule out AIDS more conclusively, the test should be done again at 12 weeks to be assured.
The third generation antibody test is divided into blood, saliva and urine test strips, it is recommended to use the best blood, high sensitivity and accuracy. In recent years, the fourth-generation antigen plus antibody test strips are more sensitive, and can usually be ruled out in about 4 weeks, and can be accurately ruled out in 6 weeks.
After high-risk sexual behavior, it is best to take the blocker within 48 hours, and the best results are achieved within 2 hours.