HIV blood tests usually require at least 2 to 6 weeks for exclusion and up to 3 months.
Currently, the diagnosis of AIDS relies on a combination of blood tests and relevant epidemiologic history. If HIV infection is suspected, HIV antibodies can usually be detected about 2~6 weeks after high-risk behavior, and a preliminary diagnosis of AIDS can be made.
However, due to the existence of individual differences, the time of diagnosis of AIDS may also vary. Some people have no abnormalities from the fourth to eighth week or even the twelfth week after high-risk behaviors, and may be able to detect HIV antibodies after three months.
If you have had high-risk sex, it is recommended that you seek medical attention and get tested under a doctor’s supervision.