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Test Code 0297903 Differential, Synovial Fluid


Light Microscopy

Performing Laboratory

CentraCare Laboratory Services

Specimen Requirements

Specimen Type: Synovial fluid

Container/Tube: Green top (sodium heparin)

Specimen Volume: Entire collection

Collection Instructions:

1. Physician collects specimen.

2. Invert tube gently 8 to 10 times to prevent clotting.

Specimen Transport Temperature


Reference Values

Polymorphonuclear: ≤25%

Mononuclear: ≥75%

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding