1887

Abstract

The BD ProbeTec ET system for identification of complex (MTBC) isolates from BACTEC 12B culture vials was evaluated in comparison with BACTEC NAP (-nitro-α-acetylamino-β-hydroxy-propiophenone) differentiation. Of 145 mycobacterial isolates tested, comprising 89 MTBC and 56 non-tuberculous mycobacteria (NTM), BD ProbeTec ET correctly identified 87 MTBC and 56 NTM but missed two MTBC. Three NTM were misidentified when NAP was incubated at 37 °C only. Overall sensitivity, specificity and positive and negative predictive values were respectively 97.8, 100, 100 and 96.6 % for the BD ProbeTec ET system and 100, 94.6, 96.7 and 94.6 % for NAP.

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2004-01-01
2020-10-28
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