Application of real-time PCR for the diagnosis of M. tuberculosis enables results to be obtained in about two hours. A total of 340 non-respiratory samples were processed using two real-time PCR assay kits: Xpert MTB/RIF® and Cobas TaqMan MTB®. The sensitivity and specificity of the Xpert assay were 95% and 100%, respectively, compared to 78% and 98% for the COBAS assay.
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