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Rheumatoid Factor  (RA)

Synonyms:  RF, RA
Specimen:  Blood; (1) SST (serum separator), Red (no preservative) or Green (lithium heparin) top vacutainer tube.
                        Volume:  Full primary tube
Minimum Volume:  300 microL serum
Collection:  If tube other than an SST is collected, transfer serum or plasma to a tightly capped plastic aliquot tube within 2 hours of collection for transport. Refrigerate at 2-8°C for 7 days; freeze at -20°C for up to 3 months.
Storage:  Refrigerate at 2-8 degrees C for 8 days; frozen 3 months within 24 hours
Rejection Criteria:  Improper labeling.
Reference Range:  Less than 15 IU/mL
Test Use:  Measurements of RF are used as an aid in the diagnosis of rheumatoid arthritis.
Additional Information:  No Additional Information Listed
Testing Includes: 
Testing Facility: