IFNG and tuberculosis: The median concentrations of IFN-γ were 28.0 (IQR 16.8–49.8) and 30.8 (IQR 20.4–41.2) in the TB group, 94.4 (IQR 60.0–134.8) and 100.4 (IQR 80.4–156.8) in the LTBI group, 5.6 (IQR 4.0–9.6) and 4.8 (IQR 4.0–10.8) in the NMP group, 5.6 (IQR 5.2–6.0) and 5.6 (IQR 5.2–6.0) in the HC group, in QFT TB1 and QFT TB2 cultures, respectively.