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HelpTest Code LAB213 Crystals, Fluid
Clinical System Name
Crystals, Fluid
Synonyms
LAB213
JOINT CRYS
Synovial Fluid Crystals
Joint Fluid For Crystals
Sample Requirements
Specimen: Body Fluid
Container(s): Dark Green/Sodium Heparin (Synovial, Pericardial, Peritoneal, Pleural Fluids),
Specimen cup, Syringe, or Plain tube acceptable for other body fluids
Preferred Vol: 1.0-5.0 mL
Minimum Vol: 0.25 mL
Note: Lavender/EDTA and Lithium Heparin tubes may produce crystalline structures resembling monosodium urate in synovial fluid and are not recommended for crystal analysis. Note body fluid type on requisition and container. Send to the lab immediately (within 1 hour) for accurate results.
Processing Instructions
Reject due to: Age of Specimen (give to Core Lab for determination), Clotted Solid, Incorrect specimen container
Spin: N
Aliquot: N
Temp: RT
Storage location: Core 5 Fridge
Off-site collection: Note type of body fluid on requisition. Refrigerate Body Fluid at 2-8oC. Crystal examination only, no cell counts. Send to main lab (if cell count is also ordered, sample should be sent stat/direct).
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Body Fluid | RT |
≤ 2 d* |
| Body Fluid |
2-8 C |
≤ 2 d* |
|
-20 C or -70 C |
N |
* It is recommended that body fluids be examined within an hour of collection if cell count is also ordered.
Availability
| STAT | Performed | TAT |
|---|---|---|
| Y | 24/7 | 2 h |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Core Hematology
Phone Number: 206-987-2617 (Client Services)
CPT Codes
89060
Methodology
Method: Polarized light field microscopy
Analytical Volume: 0.1 mL body fluid
Reference Range
Reference ranges are not available for body fluid.