Table 3 Discordant between TST at a cut-off point ≥ 10 mm of skin induration and QFTGIT at a cut-off point ≥ 0.35 IU/ml level of IFN-γ
QFTGIT | Â | TST | Â |
|---|---|---|---|
|  | Positive (≥ 10 mm) | Negative (< 10 mm) | Anergy (0 mm) |
Positive ( ≥ 0.35 IU/ml) | 151 | 76 | 99 |
Negative (< 0.35 IU/ml) | 16 | 28 | 130 |
Indeterminate | 1 | 1 | 3 |