HIV-1/2 Antigen and Antibodies, Fourth Generation, with Reflexes

HIV-1/2 Antigen and Antibodies test is a fourth-generation screening test that detects both HIV-1 and HIV-2 antibodies and HIV-1 p24 antigen. This combined test can identify HIV infection earlier than antibody-only tests, as the p24 antigen appears before antibodies develop. A negative result indicates no HIV-1/2 antibodies or p24 antigen detected. Positive results are typically confirmed with additional testing including antibody differentiation and RNA testing.