ADA and pleural tuberculosis: The median values of the variable P-ADA were significantly different (P < 0.0001) between both exudates (18.4 UI/L; IQR, 9.85-41.4) and exudates without pleural tuberculosis (11.0 UI/L; IQR, 7.25-19.75) and transudates (6.85; IQR, 2.67-11.26).