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* Crystals in Body Fluid

Mnemonic

BF CRYSTAL

Synonym

Gout - Joint Fluid Crystals - Uric Acid Crystals - BF Crystals - Body Fluid Crystals

Specimen Collection Requirements

Collect

Synovial or body fluid in lavender (EDTA) top tube or container with no anticoagulant. Small volumes (<0.5 mL) should be kept unanticoagulated. Green (sodium heparin) top tube also acceptable.

Handling

If submitted in EDTA, mix tube gently, end over end, 8-10 times immediately after collection.

Preferred Volume

1.00 mL

Minimum Volume

0.25 mL

Transport

Refrigerated

Rejection Criteria

Frozen specimen, specimen collected with oxalate preservative or lithium heparin

Stability

Refrigerated: 2 days

Testing Information

Note

Specimens submitted on slides or swabs are acceptable, but discouraged if not necessary. Body fluid in red top tubes is discouraged. Red top tubes contain a clot activator that may interfere with crystal evaluation.

Performed

7 days/week

Reported

24 hours

Method

Polarized Microscopy

Reference Values

Reference Values

Negative

CPT Codes

89060

Last Updated: Thursday, December 10, 2020 03:47:10 AM


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