HIV-1 Antigen/Antibody; HIV-1/O/2, 4th Generation

 (Note: necessary lab process requires 5-7 days to receive results)

            The fourth-generation HIV-1/O/2 assay is acknowledged to   

            detect acute HIV infection 4 to 12 days earlier than       

            third-generation assays. Coupled with supplemental tests and

            clinical information, this cascade can help decrease the   

            spread of HIV infection.  According to the CLSI guideline, 

            anyone testing positive by a fourth-generation screening   

            assay and supplemental tests (either antibody or RNA       

            detection) should initiate care and follow-up tests for    

            clinical staging.[1]