Abstract
The performance of the MB-Check system (Roche) in the recovery of mycobacteria from clinical specimens was compared with that of the Bactec radiometric system and conventional culture on Löwenstein-Jensen medium. A total of 1,582 clinical specimens were used for the study; 74 yielded mycobacteria. Organisms of the Mycobacterium tuberculosis and Mycobacterium avium complexes accounted for the majority of isolates. The rate of recovery of all mycobacteria with the Bactec system was 91.9%, with the MB-Check system 79.7% and on Löwenstein-Jensen medium only 54.1%. Combination of the Bactec and MB-Check systems allowed recovery of 100% of isolates. The Bactec system showed a faster detection time than the other two methods.
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