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Rheumatoid Factor, CSF
Test Code17407
CPT Codes
86431
Preferred Specimen
1.5 mL CSF in a sterile transport tube
Minimum Volume
1 mL
Instructions
Freeze and ship frozen
Transport Temperature
Frozen
Specimen Stability
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Immunoturbidimetry
Setup Schedule
Night Sets up 6 days a week.
Clinical Significance
Central nervous system vasculitis is a rarely described complication of rheumatoid arthritis. As with rheumatoid vasculitis in general, the cause of CNS vasculitis in rheumaroid arthritis (RA) is unknown.