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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Crystals, Synovial Fluid

Test Code(s): SCRY / FCR

CPT Code(s): 89060

Methodology: Polarizing Microscopy

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.

Specimen Requirements

Specimen: Synovial fluid

Collection Instructions: Preferred Collection Container:  Lavender (liquid EDTA)or Green (sodium heparin only) top tube.

If specimen is not bloody, it can be submitted in a capped syringe (remove needle before submitting to lab).

Collection Container: Preferred: See collection instructions.

Collection Volume: Preferred: 4 mL
Pediatrics: 0.5 mL

Volume Required: Preferred: 0.5 mL
Pediatrics: 0.2 mL

Specimen Transport: Transport specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from outreach location.

Unacceptable Criteria: Clotted specimens are not acceptable. Specimens collected in powdered EDTA or lithium heparin tubes are not accepted. These anticoagulant types are associated with crystal formation (i.e., false positive results).

Stability: Ambient: 8 hours
Refrigerated: 24 hours
Frozen: Not acceptable


Expected Results:


Crystals, Synovial Fluid

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