Objective To evaluate the effects of ELISPOT(enzyme-link immunospot) test using different samples indiagnosing tuberculous pleurisy. Methods Using T-Spot-TB kit to detect interferon-γ level in pleural effusion and periph-eral blood from 164 patients with tuberculous pleural effusion and 102 patients without tuberculous pleural effusion. Numberof spot forming cells(SFCs) as well as the specificity and sensitivity of the tests were compared between these two methods(ELISPOT using leural effusion or peripheral...