Table 2.
Respiratory specimens: comparison of Ultra vs. Xpert semiquantitative readouts with AFB smear and culture results.
| No. of specimens with ultra | Specimens with | No. of specimens with Xpert | ||
|---|---|---|---|---|
| Not detected | Smear positive growth of MTB (no. = 75) | Not detected | ||
| Trace | ||||
| Very low | Very low | |||
| Low | 1 | 8 | Low | |
| Medium | 41 | 32 | Medium | |
| High | 33 | 35 | High | |
| Total | 75 | 75 | Total | |
| Not detected | 7 | Smear negative growth of MTB (no. = 48) | 16 | Not detected |
| Trace | 5 | |||
| Very low | 20 | 8 | Very low | |
| Low | 11 | 22 | Low | |
| Medium | 5 | 2 | Medium | |
| High | High | |||
| Total | 48 | 48 | Total | |
| Not detected | 15 | Smear positive growth of NTM (no. = 15) | 15 | Not detected |
| Trace | ||||
| Very low | Very low | |||
| Low | Low | |||
| Medium | Medium | |||
| High | High | |||
| Total | 15 | 15 | Total | |
| Invalid/Error | 3 | Smear negative no growth of AFB (no. = 131) | 2 | Invalid/Error |
| Not detected | 125 | 129 | Not detected | |
| Trace | 3 | |||
| Very low | Very low | |||
| Low | Low | |||
| Medium | Medium | |||
| High | High | |||
| Total | 131 | 131 | Total | |