If the blood HIV antigen and antibody are not up to the standard, it is considered that there is a possibility of HIV infection and further examination is needed to clarify the result. Normal people have negative results for HIV antigen and antibody, but if the HIV antigen and antibody are not up to standard, it will be considered as a suspicious positive result. Ordinary hospitals can not fully diagnose AIDS, if HIV antigen, antibody test results are positive, the blood specimen needs to be sent to the CDC or diagnostic qualification of infectious disease hospitals to further confirm the diagnosis, through the CDC’s examination and the clinician’s examination, a comprehensive judgment of whether the patient has HIV infection. So for the initial screening of HIV antigen, antibody does not meet the standard, consider that there may be HIV infection, need to be further sent to the CDC to check the HIV antibody, if they are positive consider that there is AIDS.