Can a negative HIV test after 48 days of high risk be ruled out?

After 48 days of high-risk test HIV negative probability can be ruled out, but can not be completely ruled out, AIDS is generally 3 months for the upper limit of the window period, high-risk behavior after 6 weeks after the test negative, but also need to be in the full 3 months when the test again can be ruled out.
AIDS is mainly through sexual transmission, blood transmission and mother-to-child transmission of infectious diseases, its window period is generally about 1 ~ 3 months, there are individual differences. Most people can probably rule out the disease 4 weeks after high-risk behavior, but the window period for HIV testing can be up to 3 months, so complete exclusion needs to be repeated after 3 months.
AIDS is currently an incurable disease, treatment can only be given antiretroviral drugs to stop the progression of the disease, in the occurrence of high-risk behavior within 72 hours, you can take AIDS blocking drugs, in most cases, can effectively prevent HIV infection.
After having high-risk behavior, you need to go to a regular hospital or CDC in time to get tested and treated.