Cell Count and Differential, Body Fluid / Clot Evaluation / Crystal Examination
Performed:
Daily
Released:
Same day as tested
CPT Code:
85810 / 89050 / 89060
Specimen Collection Details
Collection:
Synovial fluid in one 4 mL lavender top tube (EDTA) and 4 mL synovial fluid in a red top tube.
Handling:
Refrigerate. Submit to lab immediately, 24 hour maximum delay. Indicate source.
Standard Volume:
4 mL EDTA synovial fluid and 4 mL red top tube synovial fluid.
Minimum Volume:
0.5 mL EDTA synovial fluid and 2 mL red top tube synovial fluid.
Transport:
Refrigerated.
Comments:
This test includes cell count and differential, crystal exam, and clot evaluation (viscosity and spontaneous clot). If glucose is desired, collect in a sterile syringe with air expelled, anaerobic transport system, or sterile red top tube (green top tube acceptable, but not preferred). These tests must be ordered separately on the requisition.
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