Evaluation of GenoType Mycobacteria Direct Assay in Comparison with Gen-Probe Mycobacterium tuberculosis Amplified Direct Test and GenoType MTBDRplus for Direct Detection of Mycobacterium tuberculosis Complex in Clinical Samples

Abstract

Three molecular assays were evaluated for the direct detection of Mycobacterium tuberculosis complex bacteria in 125 respiratory and 22 nonrespiratory samples. The overall sensitivities obtained were as follows: GenoType MTBDRplus, 97.9%; GenoType Mycobacteria Direct, 93.7%; Gen-Probe Mycobacterium tuberculosis Amplified Direct Test, 89.6%. The specificity of the assays used was 100%.