| Diagnostic method | Judgment | TB disease (n = 31) | Non-TB disease (n = 62) | NTM disease (n = 42) | Other respiratory disease (n = 20) |
| IFN-γ (QFT) | Positive | 23 (74%) | 7 (11%) | 3 (7%) | 4 (20%) |
| Negative | 6 (19%) | 54 (87%) | 38 (91%) | 16 (80%) | |
| Indeterminate | 2 (7%) | 1 (2%) | 1 (2%) | 0 | |
| IL-2 | Positive | 19 (61%) | 20 (32%) | 15 (36%) | 5 (25%) |
| Negative | 12 (39%) | 42 (68%) | 27 (64%) | 15 (75%) | |
| TNF-α | Positive | 22 (71%) | 16 (26%) | 11 (26%) | 5 (25%) |
| Negative | 9 (29%) | 46 (74%) | 31 (74%) | 15 (75%) | |
| MCP-1 | Positive | 25 (81%) | 14 (23%) | 9 (21%) | 5 (25%) |
| Negative | 6 (19%) | 48 (76%) | 33 (79%) | 15 (75%) | |
| MIP-1β | Positive | 25 (81%) | 12 (19%) | 7 (17%) | 5 (25%) |
| Negative | 6 (19%) | 50 (81%) | 35 (83%) | 15 (75%) |