Test Code LAB0205435 Crystal Identification, Synovial Fluid
Methodology
Polarized Light Microscopy
Performing Laboratory
CentraCare Laboratory Services
Specimen Requirements
Specimen Type: Synovial fluid
Container/Tube: Green top (sodium heparin)
Note: Use of Gel tubes, EDTA, oxalate, or lithium heparin SHOULD NOT be used as anticoagulants since each may be associated with crystal formation.
Specimen Volume: 3-5 mL
Collection Instructions:
1. Aseptically collect specimen.
2. Invert several times to mix fluid.
3. Label tube with patient’s name (first and last), medical record number, date and actual time of collection, and type of specimen.
Specimen Transport Temperature
Refrigerated (preferred)/Ambient < 1 day
Reference Values
No crystals seen
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
89060