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Updated: Jun 1, 2026

Diagnosing Pulmonary Tuberculosis with the Xpert MTB/RIF Test
Published on: April 9, 2012
Comparison of two molecular methods for rapid diagnosis of extrapulmonary tuberculosis
Manuel Causse1, Pilar Ruiz, Juan Bautista Gutiérrez-Aroca
1Microbiology Service, Reina Sofia University Hospital, Mycobacteria Reference Center, Avda. Menendez Pidal s/n, 14004 Córdoba, Spain.
Abstract:
Application of real-time PCR for the detection of Mycobacterium tuberculosis enables results to be obtained in about 2 h. A total of 340 nonrespiratory 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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