Rheumatoid Factor
| Abbrev Code: | RF | ||
| Order Code: | LAB206 | Order Name: | Rheumatoid Factor |
| Synonyms: | RA Screen | ||
| Methodology: | Endocrine: Immunoturbidimetry | ||
| CPT Codes: | 86431 x1, 86431 x1 | ||
| Turnaround Time: | Performed Mon-Fri; results are reported the within 1 day. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 1 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Container: | Red or gold (gel) Alternate Containers: Red (no gel) |
| Causes for Rejection: | Grossly hemolyzed and highly lipemic samples. Samples not separated from cells within 2 hours of collection. |
Processing and Shipping
| Specimen Processing: | Within 2 hours of collection, centrifuge and aliquot 0.5 mL, 0.2 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Test Performed at or Referral Lab | UM Specialty Core/Prot/Endo (Optilite C) (UMMC East Bank) |
Interpretive
| Reference Range: | 0-20 IU/mL |
| Use: | Indicator in the diagnosis and treatment of Rheumatoid Arthritis. |
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