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Rheumatoid Arthritis (RA) Factor, Quantitative, Serum or Plasma
Test CodeRheumatoid Factor/RFACT. - NCMC
CPT Codes
86431
Preferred Specimen
1.0 mL serum from SST
Minimum Volume
0.5 mL
Other Acceptable Specimens
1 mL plasma from Green top (Lithium Heparin) or 1 ml serum from Red Top
Specimen Stability
| 20 - 25 °C for 1 day 4 - 8 °C for 8 days ≤20°C for 3 months |
Methodology
Immunoturbidimetric Nephelometric
Setup Schedule
Monday through Sunday; Continuously
Report Available
Same day
Reference Range
≤13 IU/L
Performing Laboratory
North Colorado Medical Center Laboratory
