Table 2. The distribution of the age of the culture at identification testing of different mycobacterial species, defined as the number of days between detection by a positive MGIT to when identification of was performed and the rates of correct identification of different mycobacterial species.
| Species | Total No. |
No. of samples tested at different culture ages (days between a positive MGIT to identification testing) | |||
|---|---|---|---|---|---|
| 0–6 | 7–13 | 14–20 | >21 | ||
| Rapid growing mycobacteria | 29 | 5 | 8 | 9 | 6 |
| M. abscessus | 16 | 2 | 5 | 6 | 3 |
| M. chelonae | 2 | 1 | 1 | ||
| M. fortuitum | 9 | 2 | 2 | 3 | 2 |
| M. cosmeticum | 1 | ||||
| M. mageritense | 1 | 1 | |||
| Subtotal | 29 | 5 | 8 | 9 | 6 |
| Correct identification rate | 100% | 100% | 100% | 100% | |
| Slowly growing mycobacteria | 54 | 9 (3) | 13 (2) | 13 (2) | 19 |
| M. avium-intracellulare complex | 40 | 7 (2) | 9 (1) | 11 (2) | 13 |
| M. kansasii | 9 | 1 | 4 (1) | 1 | 3 |
| M. szulgai | 1 | 1 | |||
| M. simiae | 1 | 1 | |||
| M. gordonae | 3 | 1 (1) | 1 | 1 | |
| Subtotal | 54 | 9 (3) | 13 (2) | 13 (2) | 19 |
| Correct identification rate | 66.7% | 84.6% | 84.6% | 100% | |
| Total | 83 | 14 (3) | 21 (2) | 23 (2) | 25 |
| Correct identification rate | 78.6% | 90.5% | 91.3% | 100.0% | |