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QuantiFERON-TB Gold

Simple blood test that aids in the detection of Mycobacterium tuberculosis, the bacteria which causes tuberculosis (TB).

The QuantiFERON-TB Gold Plus (QFT-Plus), also known as an interferon gamma release assay (IGRA), is an in vitro diagnostic test that utilizes a peptide cocktail simulating ESAT-6 and CFP-10 proteins to stimulate cells in heparinized whole blood. Detection of interferon gamma (IFN-g) by enzyme-linked immunosorbent assay (ELISA) is used to identify in vitro responses to these peptide antigens that are associated with Mycobacterium tuberculosis infection.