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| Title | RHEUMATOID FACTOR (RA) |
| Specimen Requirement | <p>1 SST/2.0 mL serum. After 30 minutes of clotting, promptly centrifuge and refrigerate.</p> |
| Methodology | |
| Stability | Refrigerate: 8 days |
| Reference Range | By Report |
| Turnaround | 1 day |
| Clinical Use | <p>Rheumatoid factor is essentially an IgM antibody that is directed toward IgG. Although it is a non-specific marker, it is associated with autoimmunity and rheumatoid arthritis. IgG antibodies may be altered to be recognized as "foreign", resulting in an autoimmunity.</p> |
| Test Code | RA |
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