Kanamycin susceptibility testing of Mycobacterium tuberculosis using Mycobacterium Growth Indicator Tube and a colorimetric method
- PMID: 11353658
- PMCID: PMC90578
- DOI: 10.1128/AAC.45.6.1934-1936.2001
Kanamycin susceptibility testing of Mycobacterium tuberculosis using Mycobacterium Growth Indicator Tube and a colorimetric method
Abstract
Two novel systems were evaluated for performing indirect kanamycin susceptibility tests on 72 strains of Mycobacterium tuberculosis. The microplate Alamar blue colorimetric method (breakpoint, 2.5 microg/ml) and the Mycobacterium Growth Indicator Tube (MGIT) system (breakpoint, 5.0 microg/ml) both produced 98.6% agreement when compared with the conventional proportion method performed on 7H10 agar using 5.0 microg of kanamycin/ml. Both systems provided results within an average of 1 week.
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