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HIV/AIDS Glossary

Enzyme-Linked Immunosorbent Assay (ELISA)

Synonym(s): Enzyme Immunoassay

A laboratory test to detect the presence of HIV antibodies in the blood, oral fluid, or urine. The immune system responds to HIV infection by producing HIV antibodies. A positive result on an enzyme-linked immunosorbent assay (ELISA) must be confirmed by a second, different antibody test (a positive Western blot) for a person to be definitively diagnosed with HIV infection.

Related Term(s): Antibody, Western Blot

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