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Test Code FLCRYS Crystal Identification, Synovial Fluid

Description

This test identifies the presence and type of crystals present in Synovial Fluid, including:

  • Monosodium Urate Crystals (MSU, Urate, Gout)
  • Calcium Pyrophosphate Dihydrate Crystals (CPPD, Pseudogout)
  • Cholesterol Crystals (if present)

Methodology

Microscopic Examination
Useful for determining cause of inflammation.

Performing Laboratory

St. Clair Hospital Laboratory

Specimen Requirements

1 green-top (heparin) tube (1 mL of heparinized synovial fluid).

Reference Values

No crystals seen

Day(s) Test Set Up

Monday through Sunday