Abstract:Objective To explore the diagnostic value of adenosine deaminase (ADA), interleukin-27 (IL-27) and mycobacterium tuberculosis antibody-immunoglobulin G (TB-Ab-IgG) in bloody tuberculous pleural effusion. Methods A total of 102 patients admitted to Huanggang Central Hospital from July 2015 to March 2017 with pleural effusion were selected. According to the nature of the pleural fluid, the patients were divided in to bloody cancerous pleural effusion group (36 cases), bloody tuberculous pleural effusion group (32 cases) and non-bloody tuberculous pleural effusion group (34 cases). Results The serum levels of ADA and IL-27 and the positive rate of TB-Ab-IgG in patients in bloody tuberculous pleural effusion group were significantly higher than those in bloody cancerous pleural effusion group and non-bloody tuberculous pleural effusion group (P?0.05). The areas under the ROC curve of ADA, IL-27, TB-Ab-IgG and the combined detection with all these three indicators for the diagnosis of bloody tuberculous pleural effusion were 0.884, 0.842, 0.867 and 0.926, with the sensitivity being 91.4% (95% CI: 0.555, 0.832), 79.8% (95% CI: 0.451, 0.612), 85.7% (95% CI: 0.712, 0.931) and 96.8% (95% CI: 0.787, 0.988), and the specificity being 93.7% (95% CI: 0.631, 0.947), 83.6% (95% CI: 0.833, 0.964), 88.6% (95% CI: 0.787, 0.998) and 94.3% (95% CI: 0.834, 0.999), respectively. The sensitivity and specificity of the combined detection were the highest. Conclusions The combined detection of ADA, IL-27 and TB-Ab-IgG has a great clinical diagnostic value in bloody tuberculous pleural effusion.