Items tagged with Diagnostics
A new blood test has been found to more accurately predict the development of tuberculosis up to two years before its onset in people living with someone with active TB, according to research published online in the American Journal of Respiratory and Critical Care Medicine, an American Thoracic Society journal.
A new 13-country patient pathway analysis published in the Journal of Epidemiology and Global Health presents updated data on what patients pay for Xpert MTB/RIF testing in the private health sector in highly privatized health markets.
Diagnostic tests for active tuberculosis (post with image)
This article descibes the tests that are used to diagnose active TB.
My experience with the health system and TB (post with image)
Lihle Dlamini is the Deputy General Secretary of the Treatment Action Campaign. Her HIV activism started in 2002 when she was diagnosed with TB and experienced the horrors of the South African public health system.
Gene Xpert (post with image)
The Gene Xpert is a new test for tuberculosis. It can find out if a person is infected with TB, and also if the TB bacterium of the person has resistance to one of the common TB drugs, rifampicin.
Drug susceptibility testing – the MGIT system (post with image)
The MGIT system is another way to test for the resistance of TB bacteria to certain TB drugs. Unlike the Genotype MTBDRplus and the INNO-LiPA tests, it uses another way to examine TB bacteria for resistance to drugs.
Updated Guidelines for Using Interferon Gamma Release Assays to Detect Mycobacterium tuberculosis Infection in United States (document)
This report is aimed at providing guidance to U.S. public health officials, health-care providers, and laboratory workers in the utilization of FDA-approved IGRAs in the diagnosis of M. tuberculosis infection in adults and children. In brief, TSTs and IGRAs (QFT-G, QFT-GIT, and T-Spot) may be used as aids in diagnosing M. tuberculosis infection. They may be used for surveillance purposes and to identify persons likely to benefit from treatment. Additionally, multiple recommendations addressing quality control, test selection, and medical management after testing are provided.
Updated Guidelines for the Use of Nucleic Acid Amplification Tests in the Diagnosis of Tuberculosis (document)
These updated guidelines, from a process initiated by the CDC and the Association of Public Health Laboratories (APHL), for the use of nucleic acid amplification (NAA) tests for the diagnosis of tuberculosis (TB) recommend that NAA testing be performed on at least one respiratory specimen from each patient with signs and symptoms of pulmonary TB for whom (a) a diagnosis of TB is being considered but has not yet been established and (b)the test result would alter case management or TB control activities, such as contact investigations.
Technical Guide: Sputum Examination for Tuberculosis by Direct Microscopy in Low-Income Countries (document)
A technical guide for sputum smear microscopy, initiated by the International Union against Tuberculosis, is designed to be an easy to use reference standard for the collection, storage and transport of sputum specimens and for the examination of sputum smears by direct microscopy. This edition includes updates addressing bio-safety and quality assurance aspects of sputum smear microscopy.
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