Assay (N = 40) | TB culture | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy (%) | |
positive | negative | ||||||
LFD-LAMP TB positive | 28 | 5 | 96.6 (82.2 - 99.9) | 54.5 (23.4 - 83.3) | 84.8 (68.1 - 94.9) | 85.7 (42.1 - 99.6) | 85 |
LFD-LAMP TB negative | 1 | 6 | |||||
Xpert MTB/RIF ultrat positive | 29 | 7 | 100 (88.1 - 100) | 36.4 (10.9 - 69.2) | 80.6 (64 - 91.8) | 100 (39.8 - 100) | 82.5 |
Xpert MTB/RIF ultrat negative | 0 | 4 |