Tuberculosis (TB) Antibody Test

A serological test aims to detect the presence of antibodies (IgG, IgM, or IgA) directed against specific Mycobacterium tuberculosis antigens in blood serum. It relies on techniques such as enzyme-linked immunosorbent assay (ELISA) or rapid lateral flow assay. It is used as an aid to diagnosis but does not definitively distinguish between latent infection and active disease, nor does it replace standard diagnostic tests such as skin prick tests, interferon-gamma assays, or cultures.