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HelpTest Code Fl Cryst Crystal Exam Fluid
Aliases
Fluid, Crystal Exam
Useful For
Crystal identification is important in synovial fluids to differentiate between the monosodium urate crystals of gout and calcium pyrophosphate crystals of pseudogout as well as other crystals that may be present in synovial fluid.
Special Collection Instructions
Collect in sterile container
Note: Do not send needles to the laboratory.
Collection Method
Body Fluid Collection by Physician
Minimum Volume
1 mL
Container
Sterile Cup
Preferred Specimen
Synovial fluid in sterile container.
Acceptable Specimens
Synovial fluid in sterile container.
Synovial fluid in EDTA tube
Reference or Target Ranges
None Seen/ Not present
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | N/A |
| Icterus Threshold | N/A |
| Lipemia Threshold | N/A |
| Other | QNS, Contaminated, Improperly Labeled. |
Specimen Stability
| Ambient | Due to the difficulty of obtaining these specimens, they will be evaluated whenever they arrive in lab |
| Refrigerated (4°C to 8°C) | N/A |
| Frozen(-70°C to 0°C) | N/A |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time |
Stat: Within g60 minutes of arrival in lab Routine: within 4 hours arrival in lab |
| Stat Availabilty | Yes |
| Performing Bench | UH Heme Man |
| Methodology/Method Description | Phase Microscope / Polarizing filter – Polarized Microscopy |
Special Handling
Deliver to laboratory ASAP
Additional Information/Important Notes
Synovial fluid cell counts will include a crystal examination
CPT Codes
89060