QuantiFERON®-TB Gold Plus (QFT-Plus)
QUANTIFERON-TB GOLD Plus (FOR TB SCREENING)
QuantiFERON®-TB Gold Plus (QFT-Plus) is a simple blood test that aids in the detection of Mycobacterium tuberculosis, the bacteria which causes tuberculosis (TB). Like its predecessor, QFT-Plus is an interferon gamma release assay, commonly known as an IGRA, and is a modern alternative to the tuberculin skin test (TST).
Unlike the TST, QFT-Plus is a controlled laboratory test that requires only one patient visit and works on patients who have previously been vaccinated against TB with the Bacille Calmette-Guerin (BCG) vaccination.