TABLE 1.
Mean times in days (range) from inoculation to detection of mycobacteria in the MGIT and Bactec 460 TB systems and to detect RIF susceptibility or resistance in the Bactec 460 TB system
| Organism | Smear category (n) | Mean times in days (range) to detection by:
|
||
|---|---|---|---|---|
| MGIT isolation | Bactec 460 TB isolation | Bactec RIF susceptibility testing | ||
| MTBC | Smear positive (57) | 10.5 (4-35) | 10.1 (3-37) | 13.5 (8-29) |
| Smear negative (13) | 15.0 (6-27) | 17.4 (11-22) | 14.7 (8-30) | |
| All (70) | 11.3 (4-35) | 11.4 (3-37) | 22.4 (15-30) | |
| MAC | Smear positive (6) | 5.8 (4-10) | 5.8 (4-8) | NAa |
| Smear negative (7) | 18.6 (11-38) | 13.7 (9-20) | NA | |
| All (13) | 12.7 (4-38) | 10.1 (4-20) | NA | |
| NTM | Smear positive (5) | 12.8 (2-39) | 10.8 (3-21) | NA |
| Smear negative (16) | 23.4 (5-55) | 24.1 (3-52) | NA | |
| All (21) | 20.9 (2-55) | 20.9 (3-52) | NA | |
a
NA, not applicable.