Generation 4 test strips can rule out AIDS at 23 days. The fourth generation of HIV test strips is HIV type 1 plus type 2 viral antibodies and p24 antigen combined test, under normal circumstances in the occurrence of high-risk behaviors three weeks, that is, 21 days can be detected HIV infection, so the use of the fourth generation of HIV test strips can be effectively excluded in 23 days. However, the fourth generation of HIV test paper test may have some error, after the initial test is recommended to go to the hospital in time to test, in order to better determine. If you want to know whether you are infected with AIDS earlier, you can choose to go to the hospital for HIV nucleic acid test, which can be shortened to 7-10 days, so that you can take medication in time to effectively inhibit viral replication and stabilize your condition. Although AIDS is a chronic infectious disease that cannot be cured for the time being, it can be controlled by taking antiretroviral drugs according to the doctor’s instructions.