Rapid Tuberculosis (TB) Test is a rapid chromatographic immunoassay for the qualitative detection of anti-TB (M. tuberculosis, M. bovis and M. africanum) antibodies (all isotypes: IgG, IgM, IgA, etc.) in human serum or plasma.
The tuberculosis blood test, also called an Interferon Gamma Release Assay (IGRA), is a way to find out if you have TB germs in your body; it measures your response to TB antigens, things that cause your immune system to make antibodies. If your blood test is positive, it means you have been infected with TB germs. You’ll get other tests to see if your tuberculosis is active.