Table III.
Susceptibility and specificity of DNA microarray chip on the determination of RFP and INH R/S compared with the standard method of Lowenstein-Jensen cultivation for the 42 samples.
| Determination by Lowenstein-Jensen cultivation | Determination by DNA microarray chip, R/S | Susceptibility, % | Specificity, % | |
|---|---|---|---|---|
| RFP resistance | 26 | 24/2 | ||
| RFP sensitivity | 16 | 1/15 | 92.3 | 93.8 |
| Total | 42 | 25/17 | ||
| INH resistance | 21 | 14/7 | ||
| INH sensitivity | 21 | 4/17 | 66.7 | 81.0 |
| Total | 42 | 18/24 |
RFP, rifampicin; INH, isoniazid; R/S, resistance/sensitivity.