To determine if you have AIDS, you need to undergo a blood test, which is called an AIDS antibody test. After HIV infection, the immune system will produce antibodies, which are not protective and cannot remove the HIV virus, but only suggestive, depending on whether the corresponding blood test can detect the antibodies. The initial period of HIV infection is likely to be asymptomatic, and it is not possible to determine whether or not you have AIDS through symptoms. Symptoms may indicate AIDS only after a few years, when there are recurrent clinical infections that cannot be explained by normal conditions. Therefore, for ordinary people with no relevant clinical symptoms, to know if they are AIDS patients, they need to be tested for HIV antibodies by blood sampling. Some highly suspected but negative antibody tests can be checked for HIV RNA.