Table 3. QFT-P assay positivity based on antigen tube.
Positive if ≥0.35 IU/mL | Positive if ≥0.70 IU/mL | |||||||
---|---|---|---|---|---|---|---|---|
Positive Results | TB1 only | TB2 only | TB1 and TB2 | Positive Results | TB1 only | TB2 only | TB1 and TB2 | |
n | n (%) | n (%) | n (%) | n | n (%) | n (%) | n (%) | |
QFT-PD | 35 | 7 (20.0) | 7 (20.0) | 21 (60.0) | 25 | 7 (28.0) | 5 (20.0) | 13 (52.0) |
QFT-PT | 51 | 5 (9.8) | 19 (37.3) | 27 (52.9) | 26 | 4 (15.4) | 8 (30.8) | 14 (53.8) |
Positivity based on background (nil IFN-γ measure) corrected values.