Diagnostic method Judgment TB disease (n=52) Non-TB disease (n=86) NTM disease (n =58) Other respiratory diseases (n=28)
QFT Positive 42(81%) 11(13%) 6(10%) 5(18%)
Negative 7(13%) 74(87%) 51(88%) 23(82%)
Indeterminate 3(6%) 0 1(2%) 0
  T-SPOT.TB Positive 45(87%) 12(14%) 7(12%) 5(18%)
Negative 6(11%) 74(86%) 51(88%) 23(82%)
Indeterminate 1(2%) 0 0 0
  IP-10 Positive 46(88%) 12(14%) 8(12%) 4(17%)
Negative 6(12%) 74(86%) 50(88%) 24(83%)
  MIG Positive 44(85%) 12(14%) 8(12%) 4(17%)
Negative 8(15%) 74(86%) 50(88%) 24(83%)
QFT: QuantiFERON; IP-10 : Interferon-gamma-induced protein; TB: Tuberculosis; MIG: Monokine induced by interferon-gamma; NTM: Nontuberculous mycobacteria
Table 2: Comparison of the results of the two IGRAs tests, IP-10 and MIG, for patients with TB disease and other respiratory diseases.