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Rheumatoid Factor

Order Code CH176
Turnaround Time 24 hours
Test Includes

Rheumatoid Factor

Specimen Requirements
Specimen Source
Transport Container
(Specimen Container)

SST (Tiger Top)

Preferred Specimens
Minimum Volume (uL)
.5 mL
Collection Instructions
(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
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