Malhotra, Anvita Gupta and Lokhande, Leena and Pakhare, Abhijit P. and Soni, Payal and Vishwakarma, Satya Prakash and Maurya, Anand Kumar and Singh, Jitendra P. and Sarman, Singh (2025) Diagnostic yield of Xpert MTB/RIF, Xpert MTB/RIF Ultra, and Truenat MTB assays on non-pulmonary samples from suspected cases of extra-pulmonary tuberculosis (EPTB). European Journal of Clinical Microbiology and Infectious Diseases, 44 (9). 2093 - 2103. ISSN 14354373; 09349723
Full text not available from this repository.Abstract
Background: Extrapulmonary tuberculosis (EPTB) poses a diagnostic challenge due to its paucibacillary nature and low diagnostic yield of traditional methods. Molecular diagnostic tools like Xpert MTB/RIF, Xpert MTB/RIF Ultra, and Truenat MTB offer promising alternatives for the rapid and higher detection rates for pulmonary TB samples. However, the yield of these newly introduced molecular tests on extra-pulmonary samples requires country-specific evaluation and comparative analysis. Methodology: This study evaluated the diagnostic performance of Xpert MTB/RIF, Xpert MTB/RIF Ultra, and Truenat MTB assays in detecting EPTB on 211 clinical specimens collected at a tertiary care centre of central India. The assays� sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPP) were compared against a composite reference standard. Results: Xpert MTB/RIF Ultra exhibited the highest sensitivity (50) for EPTB detection, outperforming the standard GeneXpert MTB/RIF (29.4) and Truenat MTB (35.3), with comparable specificity across all three assays. Among the specimen types, pus samples demonstrated the highest (value) diagnostic yield. These findings highlight the superior diagnostic capabilities of Xpert MTB/RIF Ultra, particularly in paucibacillary cases. Conclusion: Xpert Ultra demonstrates superior sensitivity for EPTB detection compared to Xpert MTB/RIF and Truenat MTB, making it a promising tool to enhance diagnostic accuracy in paucibacillary TB. Its adoption as a standard diagnostic method could significantly improve EPTB management. These findings advocate for integrating advanced molecular diagnostics into routine tuberculosis workflows to reduce diagnostic delays and improve patient outcomes. Clinical trail number: Not applicable. © 2025 Elsevier B.V., All rights reserved.
| Item Type: | Article |
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| Additional Information: | Cited by: 0 |
| Uncontrolled Keywords: | adult; Article; cerebrospinal fluid; composite reference standard; controlled study; cross-sectional study; diagnostic test accuracy study; diagnostic value; extrapulmonary tuberculosis; female; human; India; major clinical study; male; predictive value; prospective study; sensitivity and specificity; synovial fluid; tertiary care center; comparative study; diagnosis; evaluation study; genetics; isolation and purification; microbiology; middle aged; molecular diagnosis; Mycobacterium tuberculosis; procedures; tuberculosis; young adult; Adult; Female; Humans; Male; Middle Aged; Molecular Diagnostic Techniques; Predictive Value of Tests; Sensitivity and Specificity; Tuberculosis; Tuberculosis, Extrapulmonary; Young Adult |
| Subjects: | Immunology and Microbiology > Microbiology |
| Divisions: | Medicine > Vinayaka Mission's Kirupananda Variyar Medical College and Hospital, Salem > Microbiology |
| Depositing User: | Unnamed user with email techsupport@mosys.org |
| Last Modified: | 14 Oct 2025 18:03 |
| URI: | https://vmuir.mosys.org/id/eprint/75 |
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