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Synovial Fluid Analysis

Synovial Fluid Analysis

Alternate Test Name

Joint Fluid Analysis

Epic Mnemonic
Sunquest Mnemonic

LAB211
SFCN

Category

Hematology

Test Performance Schedule

Sunday - Saturday

Result Availability

Within 24 hours – STAT upon request

Specimen Required

Container

Lavender top (EDTA)
Sterile Container

Volume

Pref. Vol.: 3.0 - 5.0 mL synovial fluid
Min. Vol.: 1.0 mL synovial fluid

Collection Instructions

• Performed by physician
• Place fresh synovial fluid in lavender top (EDTA) tube and any excess fluid in a sterile container.

Transportation Instructions

• Maintain at room temperature
• Transport to the laboratory as soon as possible

Stability

Cell Count: 24 hours
Crystal Examination: 72 hours when refrigerated past 24 hours.

Causes for Rejection

Not maintained at room temperature

Remarks

Powdered EDTA and lithium heparin should not be used because artifacts may interfere with the microscopic examination of crystals. BD Vacutainer® Lavender top (EDTA) tubes contain sprayed-on liquid EDTA and are the preferred collection tube.

CPT Codes

Crystals: 80960
Count: 89051

Effective/Revised

11/28/2016

Clinical Significance

Synovial fluid analysis is a group of tests that examine joint (synovial) fluid. Synovial fluid analysis may be ordered to help diagnose the cause of joint inflammation, pain, swelling, and fluid accumulation.

 

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