HIV is the Human Immunodeficiency Virus, also known as the AIDS virus. HIV tests include antibody tests, lymphocyte tests, nucleic acid tests, drug resistance tests and imaging tests. 1. Antibody test: Antibody test includes HIV-1 and 2 antibody test, which is one of the most commonly used methods to diagnose HIV infection, and if the test result is positive, the diagnosis can basically be confirmed. 2. Lymphocyte test: through the detection of lymphocyte counts, the patient’s current immune status can be clarified and the stage of HIV infection can be determined. 3. Nucleic acid test: HIV can be found in the patient’s blood, so through the HIV nucleic acid test, the severity of the patient’s condition can be clarified. 4. Drug resistance test: HIV genotypic drug resistance test can clarify which drugs the patient is resistant to, and can be used to guide the use of drugs. 5. Imaging tests: If the patient has complications, diagnosis can be made through imaging tests. If high-risk behavior occurs, it is recommended to go to a regular hospital in time, under the guidance of the doctor for examination.