Xpert MTB/RIF: Introduction, Principle, Procedure, Result-Interpretation, Uses, and Keynotes

GeneXpert® Xpert® MTBRIF Test Result- MTB Detected (Very Low) and Rifampicin Resistance Not Detected

Introduction The Xpert MTB/RIF assay is an automated, cartridge-based molecular test used to detect Mycobacterium tuberculosis (MTB) and rifampicin (RIF) resistance, the most potent first-line anti-TB drug. Endorsed by the WHO in 2010, the Xpert MTB/RIF assay revolutionized TB diagnosis by providing results in less than two …

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Xpert MTB/RIF Ultra: Introduction, Principle, Procedure, Result-Interpretation, Uses, and Keynotes

GeneXpert Dx System software interface displaying a completed diagnostic result for an Xpert MTB-RIF Ultra assay

Introduction Xpert MTB/RIF Ultra is an automated diagnostic test designed for the rapid and simultaneous detection of Mycobacterium tuberculosis (MTB) and resistance to rifampin (RIF). It is a second-generation assay developed by Cepheid to provide significantly higher sensitivity than the original Xpert MTB/RIF, particularly for …

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Pneumocystis PCR: Introduction, Principle, Test Requirements, Procedure, Result-Interpretation, Clinical Significance, and Keynotes

Pneumocystis PCR: Introduction, Principle, Test Requirements, Procedure, Result-Interpretation, Clinical Significance, and Keynotes

Introduction Pneumocystis PCR is a molecular diagnostic tool used for the detection of Pneumocystis jirovecii DNA in respiratory specimens, especially in immunocompromised patients suspected of having Pneumocystis pneumonia (PCP).It offers higher sensitivity than traditional staining techniques (e.g., GMS, toluidine blue) and is particularly helpful in …

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SARS-CoV-2 PCR Test-Introduction, Test Result, Test Method, Clinical Significance, and Keynotes

SARS-CoV-2 PCR Test-Introduction, Test Result, Unit, Normal Range, Test Method, Clinical Significance, and Keynotes

Introduction The Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Polymerase Chain Reaction (PCR) test is a molecular diagnostic technique used to detect the genetic material of the SARS-CoV-2 virus in individuals suspected of having COVID-19. This test plays a crucial role in identifying active infections …

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