Objective To study the application and evaluation of the new fourth-generation HIV-1/2 assays that can detect HIV-1,HIV-2 antibodies and HIV p24 antigen among the clients in the Beijing You'an STD clinic.Methods HIV-1/2 antibody tests were performed on 8495 samples by the combination methods of ELFA and the gold standard method(DIGFA).The positive samples for any method were sent to Beijing CDC and results were confirmed by the Western blot(WB) test.Results Seventy nine samples with positive results for bot...