Hiv test kit, 4TH GENERATION MICROLISA HIV Ag & Ab is an in- vitro qualitative enzyme immunoassay for the detection of antibodies to HIV-1 andor HIV-2 and HIV-1 p24 antigen in human serum or plasma. It is intended for screening of blood donors or other individuals at risk for HIV-1 andor HIV-2 infection and for clinical diagnostic testing.Use of Envelope Antigens gp41, C terminus of gp120 for HIV-1 and gp36 for HIV-2 & simultaneously detection of p24 antigen with p24 monoclonal antibodies