Results of whole blood IFN-γ assay by diagnostic group
| Diagnosis (based on TST) | Whole blood IFN-γ assay result | Total | ||
|---|---|---|---|---|
| Negative | Positive | Failed | ||
| *Nine high negative control; three inadequate mitogen control. | ||||
| †Three high negative control; two inadequate mitogen control. | ||||
| ‡Three patients did not have a TST. | ||||
| Uninfected | 38 (76%) | 0 | 12 (24%)* | 50 (100%) |
| Latent TB | 26 (62%) | 11 (26%) | 5 (12%)† | 42 (100%) |
| TB disease | 0 | 9 (100%)‡ | 0 | 9 (100%) |
| Total | 64 | 20 | 17 | 101 |