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GENERAL INFORMATION

LINKS

Mayo Clinic

Mayo Clinic Laboratories

Test Code RHEUMATOID-BF Rheumatoid Factor Screen with Reflex to Titer, Synovial Fluid

Additional Codes

Quest test code: 15384X

Performing Laboratory

Quest Diagnostics

Specimen Requirements

1 mL Synovial fluid--STERILE CONTAINER

Minimum Volume: 0.3 mL

Reject Criteria

Gross hemolysis • Visible particulate matter

 

Reference Values

Rheumatoid Factor, LA Screen Negative
Rheumatoid Factor, LA Titer <1:5

 

Methodology

Latex Agglutination (LA)

Specimen Transport Temperature

Transport Temperature: Refrigerated (cold packs)

Specimen Stability

  • Room temperature: 24 hours
  • Refrigerated: 7 days
  • Frozen: 21 days

Test Classification and CPT Coding

CPT Code: 86430