Xpert MTB/RIF(R), a novel automated polymerase chain reaction-based tool for the diagnosis of tuberculosis
SourceInternational Journal of Tuberculosis and Lung Disease, 15, 7, (2011), pp. 988-989
Article / Letter to editor
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International Journal of Tuberculosis and Lung Disease
SubjectN4i 1: Pathogenesis and modulation of inflammation NCMLS 1: Infection and autoimmunity; N4i 3: Poverty-related infectious diseases
There is an urgent need for new point of care tests for tuberculosis (TB). Xpert MTB/RIF(R) is a real-time polymerase chain reaction-based system that detects Mycobacterium tuberculosis DNA and rifampicin (RMP) resistance modulating mutations directly from clinical samples in 2 h. The sensitivity for detecting M. tuberculosis in culture-positive samples was 93.8% (60/64) and exceeded smear microscopy (40/64, 62.5%). The specificity for detecting M. tuberculosis was 92.0% (23/25) and for RMP resistance it was 100% (8/8). The test is simple to conduct and requires basic sputum handling facilities only. These characteristics render it a promising close-to-patient test for TB in various settings.
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