Table 1 Performance of Ziehl-Neelsen (ZN), Magnetic bead-FM (fluorescence microscopy) and Concentrated FM compared with culture on MGIT 960 and Lowenstein-Jensen medium
| Â | Â | Culture (MGIT + LJ) | ||
|---|---|---|---|---|
| Â | Â | Positive | Negative | Total |
Direct ZN | ||||
| Â | Positive | 55 | 2 | 57 |
| Â | Negative | 52 | 173 | 225 |
| Â | Total | 107 | 175 | 282 |
Magnetic bead FM | ||||
| Â | Positive | 70 | 20 | 90 |
| Â | Negative | 37 | 155 | 192 |
| Â | Total | 107 | 175 | 282 |
Concentrated FM | ||||
| Â | Positive | 80 | 10 | 89 |
| Â | Negative | 27 | 165 | 193 |
| Â | Total | 107 | 175 | 282 |
Direct FM | ||||
| Â | Positive | 63 | 1 | 64 |
| Â | Negative | 44 | 174 | 218 |
| Â | Total | 107 | 175 | 282 |