Pleural Effusion Analyzer Pleural Fluid Analyzer Light’s Criteria Pleural protein g/dL Serum protein g/dL Pleural LDH U/L Serum LDH U/L Serum LDH upper limit of normal U/L Evaluate for pseudoexudate Pleural albumin g/dL Serum albumin g/dL Receiving diuretics Use gradients when Light’s criteria may overcall an exudate after diuresis Pleural Fluid pH Glucose mg/dL Nucleated cells /µL Neutrophils % Lymphocytes % Appearance Not specified Clear Cloudy Purulent Bloody Milky Culture Not resulted Negative Positive Cytology Not resulted Negative Atypical / indeterminate Positive for malignancy Additional pleural studies Triglycerides mg/dL Cholesterol mg/dL Chylomicrons Not tested Present Absent ADA U/L Eosinophils % RBC count /µL Pleural hematocrit % Peripheral hematocrit % Pleural amylase U/L Serum amylase U/L Clinical Context Pneumonia suspected Loculated effusion Known or suspected malignancy TB risk Analyze pleural fluid Reset
