IFNG and tuberculosis: On average, IFN-γ responses decreased with increasing Xpert MTB/RIF-generated cycle threshold (CT) values in Xpert MTB/RIF-positive individuals with definite TB, however, this relationship was not significant (p-value; rS) for TSPOT.TB (0.70; −0.04), QFT-GIT (0.91; 0.01) or PPD ELISPOT (0.49; −0.07) (Figure 2).