AIDS can be detected through blood tests, but if you want to detect the presence of AIDS through blood tests, you must specify the test items, which must be related to HIV. If only routine blood tests, liver and kidney functions and other items of routine checkups are checked, the same cannot be done to detect the presence of AIDS. The most important blood tests related to AIDS are the antibodies to AIDS, including type I and type II antibodies. If there is a possibility of HIV infection in the near future, P24 antigen combined with HIV antibodies can be used to shorten the window period. In addition, HIV can be detected in the bloodstream, and its genetic material, which is the AIDS RNA, can also be diagnosed if the HIV RNA is quantified through this test.