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LDH, Body Fluid
MessageTest performed at York Hospital Laboratory.
Test Code
BFLDH
CPT Codes
83615
Preferred Specimen
0.5 mL fluid submitted in a no additive (red-top) tube.
Other Acceptable Specimens
0.5 mL fluid submitted in a plastic leakproof container, 0.5 mL fluid submitted in a lithium heparin (green-top) tube.
Instructions
Acceptable body fluids include: synovial, pleural, peritoneal, pericardial, and drainage. Please specify body site for drainage fluids.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 2 days
Refrigerated: Not recommeded
Frozen: Not recommended
Refrigerated: Not recommeded
Frozen: Not recommended
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolyzed specimens
Methodology
Spectrophotometry
Setup Schedule
Daily
Report Available
Next Day
Reference Range
None established
Clinical Significance
The most reliable tests for differentiating between the transudates and exudates are the simultaneous analysis of fluid and serum from lactate dehydrogenase (LDH) an total protein levels. In synovial fluids, LDH levels are increased in rheumatoid and infectious arthritis and gout and normal in osteoarthritis.
