IFNG and HIV infectious disease: In the assessment where a positive TST result was judged as > 10 mm for participants except those with HIV-infection, participants in QFTP +/TST- discordance group had lower median IFN-γ concentrations in both TB1 and TB2 tubes than participants who had concordant positive (QFTP +/TST+) results (TB1: 1.75 IU/mL (IQR 0.89–3.34) vs 2.47 IU/mL (IQR 0.96–5.84); p = 0.08, TB2: 1.78 IU/mL (IQR 1.04–4.03) vs 2.82 IU/mL (1.41–5.69); p = 0.05) Fig. 1.