Comparison of six biological markers for the diagnosis of tuberculous pleuritis.
case_control · Level III
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Abstract
STUDY OBJECTIVE: We sought a marker to differentiate tuberculous pleural effusions from nontuberculous pleural effusions, which otherwise can be difficult. PATIENTS: We studied 55 patients with pleural effusions, 20 (36%) with tuberculous pleuritis and 35 (64%) with a nontuberculous etiology. MEASUREMENTS AND RESULTS: Pleural fluid levels of adenosine deaminase, interferon (INF)-gamma, interleukin (IL)-12p40, IL-18, immunosuppressive acidic protein, and soluble IL-2 receptors were measured and were subjected to receiver operating characteristic analysis. INF-gamma had the greatest sensitivity and specificity for tuberculous pleuritis among the six biological markers studied. CONCLUSION: The determination of INF-gamma levels in pleural fluid is the most informative in the diagnosis of tuberculous effusion.
Medical subject headings
- Biomarkers
- Pleural Effusion
- Tuberculosis, Pleural