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Decreased fluid glucose concentration is usually associated with septic or inflammatory processes; in pleural effusion, very low glucose is a facet of rheumatoid effusion: pleural fluid glucose <50 mg/dL characterizes rheumatoid effusion. It is often much less.
• Peritoneal: Not established
− Transudate: Equal to simultaneously drawn plasma
− Exudate: Equal to simultaneously drawn plasma
• Synovial: Equal to simultaneously drawn plasma
The method performance specifications have not been established for this test in body fluid. The test result should be integrated into clinical context for interpretation.
Potts et al describe loculated effusions or empyemas with low glucose and low pH. Low glucose is found with empyema, tuberculosis, neoplasia, and rheumatoid effusion.1 In cases of malignant pleural effusions, when there is low pleural fluid glucose (<60 mg/dL) and pH <7.30, a probability of 90% that the cytologic yield will be positive was reported.2
Any fresh body fluid
On synovial fluid collection only, patient should fast for eight hours.
Collect aseptically into sterile tube.
Causes for Rejection
The request form must state site of fluid (ie, pleural, peritoneal, pericardial, synovial).
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|019497||Glucose, Body Fluid||2344-0||019497||Glucose, Body Fluid||mg/dL||2344-0|