{"title":"Evaluation and Comparison of Laboratory Methods in Diagnosing Mycobacterium tuberculosis and Nontuberculous Mycobacteria in 3012 Sputum Samples","authors":"Qian Wu, Yelei Zhu, Yu Zhang, Zhengwei Liu, Mingwu Zhang, Jiazhen Chen, Beibei Wu","doi":"10.1111/crj.70071","DOIUrl":null,"url":null,"abstract":"<p>Tuberculosis is a global public health threat as an infectious disease, and effective blocking of transmission relies on timely diagnosis. Although a number of laboratory tests are available in diagnosing <i>Mycobacterium tuberculosis</i> (MTB) and nontuberculous mycobacteria (NTM), it is still of great need to evaluate their diagnostic value in clinical samples. In this study, we evaluated five MTB diagnostic methods (including conventional sputum smear microscopy, sandwich cup sputum smear microscopy, sputum culture, Xpert-MTB/RIF, and CapitalBio TB/NTM kit detection test) in 3012 sputum specimens and compared their diagnostic performance of the single and combined tests. In the diagnosis of MTB, the Xpert-MTB/RIF had the highest sensitivity, 79.6% (0.770–0.819), among all the single diagnostic methods, and the combination of CapitalBio TB/NTM kit and culture approach significantly increased sensitivity to 88.4% (<i>p</i> < 0.05). In the diagnosis of NTM, the culture method has higher sensitivity (85.7%) compared with the Capital Bio TB/NTM kit method (45.7%). In the diagnosis of mycobacteria, the CapitalBio TB/NTM kit detection test has the highest sensitivity (77.1%) and combined with conventional sputum smear and culture significantly increased the sensitivity further to 84.2%. In conclusion, Xpert-MTB/RIF is a sensitive, rapid, and reliable method for TB detection in sputum samples, and other diagnostic methods including culture are still of great clinical values for improving the sensitivity of MTB diagnosis. The sensitivity of CapitalBio TB/NTM kit in diagnosing NTM is still insufficient in clinical practice.</p>","PeriodicalId":55247,"journal":{"name":"Clinical Respiratory Journal","volume":"19 3","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/crj.70071","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Clinical Respiratory Journal","FirstCategoryId":"3","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/crj.70071","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"RESPIRATORY SYSTEM","Score":null,"Total":0}
引用次数: 0
Abstract
Tuberculosis is a global public health threat as an infectious disease, and effective blocking of transmission relies on timely diagnosis. Although a number of laboratory tests are available in diagnosing Mycobacterium tuberculosis (MTB) and nontuberculous mycobacteria (NTM), it is still of great need to evaluate their diagnostic value in clinical samples. In this study, we evaluated five MTB diagnostic methods (including conventional sputum smear microscopy, sandwich cup sputum smear microscopy, sputum culture, Xpert-MTB/RIF, and CapitalBio TB/NTM kit detection test) in 3012 sputum specimens and compared their diagnostic performance of the single and combined tests. In the diagnosis of MTB, the Xpert-MTB/RIF had the highest sensitivity, 79.6% (0.770–0.819), among all the single diagnostic methods, and the combination of CapitalBio TB/NTM kit and culture approach significantly increased sensitivity to 88.4% (p < 0.05). In the diagnosis of NTM, the culture method has higher sensitivity (85.7%) compared with the Capital Bio TB/NTM kit method (45.7%). In the diagnosis of mycobacteria, the CapitalBio TB/NTM kit detection test has the highest sensitivity (77.1%) and combined with conventional sputum smear and culture significantly increased the sensitivity further to 84.2%. In conclusion, Xpert-MTB/RIF is a sensitive, rapid, and reliable method for TB detection in sputum samples, and other diagnostic methods including culture are still of great clinical values for improving the sensitivity of MTB diagnosis. The sensitivity of CapitalBio TB/NTM kit in diagnosing NTM is still insufficient in clinical practice.
期刊介绍:
Overview
Effective with the 2016 volume, this journal will be published in an online-only format.
Aims and Scope
The Clinical Respiratory Journal (CRJ) provides a forum for clinical research in all areas of respiratory medicine from clinical lung disease to basic research relevant to the clinic.
We publish original research, review articles, case studies, editorials and book reviews in all areas of clinical lung disease including:
Asthma
Allergy
COPD
Non-invasive ventilation
Sleep related breathing disorders
Interstitial lung diseases
Lung cancer
Clinical genetics
Rhinitis
Airway and lung infection
Epidemiology
Pediatrics
CRJ provides a fast-track service for selected Phase II and Phase III trial studies.
Keywords
Clinical Respiratory Journal, respiratory, pulmonary, medicine, clinical, lung disease,
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