Receiver Operating Characteristic plots of the pleural fluid FLDH, ALBR, and SEAG. The optimum cut-off level was determined by selecting the points of test values that provided the greatest sum of sensitivity and specificity. The optimum cutoff for FLDH was 163 IU/L, ALBR = 0.68, SEAG = 9.0.
Joseph et al. BMC Pulmonary Medicine 2002 2:1 doi:10.1186/1471-2466-2-1