How Accurate Are HIV Testing?
:How Accurate Are HIV Testing? Any HIV positive result given by an ELISA test must be confirmed: Secondary tests include: Western Blot Assays–most accurate confirmatory Ab test Indirect Immunofluorescence Assay – Like the Western blot, but uses a microscope to detect HIV antibodies. Line Immunoassay -. Reduces chance of sample contamination and is as accurate as the Western Blot. A second ELISA – May be used to confirm a diagnosis; usually a different commercial brand; use a different method of detection to the first. When two tests are combined, the chance of getting an inaccurate result is less than 0.1%. Home Test Kits :Home Test Kits Home sampling kits Sampling device purchased; blood sample taken at home and sent to lab for testing Low potential for mistake Reliable as conventional testing Home testing kits Not approved for sale in the United States Baseline Evaluation* :Baseline Evaluation* Laboratory tests for initial patient visits: • HIV antibody testing • CD4 T-cell count (10
