Tuberculosis (TB) Laboratory & Quality Assurance Examination

Negative MGIT tube (left) with clear medium versus a positive MGIT tube (right) showing characteristic granular mycobacterial clumping at the bottom

Encircle the correct Answer of the Following question. 1) What is the full form of LQAS? 2) What are the components of the Quality Assurance system? 3) LQAS is based on… 4) GeneXpert testing detects… 5) The slide positivity rate is determined in LQAS is …

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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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Serpentine Cord: Introdction, Clinical Significance, and Keynotes

Serpentine cord or Cord factor or Trehalose dimycolate,TDM of Mycobacterium tuberculosis complex (MTBC) in Ziehl-Neelsen Staining of modified Middlebrook 7H9 Broth at a magnification of 1600X

Introduction Clinical Significance Keynotes Further Readings