Wantai’s TB-IGRA FIA is intended for use as an aid in the diagnosis of TB infection including both latent Tuberculosis infection and Tuberculosis disease. Wantai’s TB-IGRA FIA is a fluorescence semi-quantitative test for detection of Interferon Gamma (IFN-γ) that responds to in-vitro stimulation by Mycobacterium Tuberculosis antigens in human blood samples.