For the HIV antibody test, the cost is around$100. The cost may vary from region to region and from hospital to hospital at different levels. For HIV patients, if you go to the hospital for a test, it is to check the HIV antibody. If the antibody is positive, you need to do a further confirmatory test at a tertiary hospital or the CDC, and if the confirmatory test is also positive, the diagnosis is clear. Another method is to go to the local CDC for examination, which is free of charge. For high-risk groups who are positive for antibodies at the CDC, further confirmatory tests are required.