Table 4: Drug susceptibility and genotypic characterization of isolates show discrepant results between L-J and Bactec MGIT 960.

Discordant isolatesSusceptibility at the following concentration (μg/mL)KIT numberGenotypic characterization

MXF 0.250.51.0
1176, 1503, 1574gyrA, wt; gyrB, wt
1575a

LEV0.51.02.0
2933bgyrA, wt; gyrB, wt
1147, 1155, 4900

KM1.252.55.0
1562, 1565rrs, wt

CPM0.6251.252.55.0
4831rrs, wt; tlyA, wt
1168, 1182, 2809

ETH1.252.55.0
5189ethA, ethR, inhA, wt
5298cethA, S266R; ethR, inhA, wt
2934ethA, ethR, inhA, wt

PAS0.51.02.04.0
4891
1201, 1212, 1214, 1573Not done
RRRR4537

Determined as a false-resistant result.
Treatment period of drug in this patient was 17 months.
Determined as a false-susceptible result.