CPT/HCPCS
86431
Order Code
CH176
Turnaround Time
24 hours
Test Includes
Rheumatoid Factor
Specimen Requirements
Specimen Source
Serum
Transport Container
(Specimen Container)
(Specimen Container)
SST (Tiger Top)
Preferred Specimens
Serum
Minimum Volume (uL)
.5 mL
Collection Instructions
(Transport Temperature)
(Transport Temperature)
Transport Refrigerated (cold packs)
Specimen Stability
| Temperature | Period |
|---|---|
| Room temperature | 24 hours |
| Refrigerated | 72 hours |
| Frozen | If delayed longer than the max RT or 2-8°C, store frozen |
Test Details
Methodology
Immunoturbidimetric
Clinical Significance
Rheumatoid factor (RF) is an autoantibody against human immunoglobulin G (IgG) commonly present at a high concentration in sera of patients with certain conditions, particularly in patients with rheumatoid arthritis.
The measurement of rheumatoid factor may aid in the diagnosis of rheumatoid arthritis. Rheumatoid factor may also be observed in systemic lupus erythematosus, Sjögren’s syndrome, cryoglobulinemia, chronic hepatic diseases and other autoimmune and inflammatory diseases. This assay is designed to accurately and reproducibly measure serum rheumatoid factor using latex agglutination.
Reference Ranges
<30.0 IU/mL
