Related Experiment Video
Updated: Mar 25, 2026

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Diagnosing Pulmonary Tuberculosis with the Xpert MTB/RIF Test
Published on: April 9, 2012
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False-positive rifampin resistant results with Xpert MTB/RIF version 4 assay in clinical samples with a low bacterial
Oksana Ocheretina1, Erin Byrt2, Marie-Marcelle Mabou3
1Center for Global Health, Division of Infectious Diseases, Department of Medicine, Weill Cornell Medical College, New York, New York; Les Centres GHESKIO, Port-au-Prince, Haiti.
Diagnostic Microbiology and Infectious Disease
|February 27, 2016
Abstract:
We report investigation of 22 TB cases with positive Xpert MTB/RIF result for resistance to Rifampin and "Very Low" MTB detection level. Twelve cases were false positive without rpoB mutations, 2 were false-positives with a silent mutation in rpoB codon T508, and only 10 were true positives.

