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Rheumatoid Arthritis (RA) Factor, Quantitative, Serum or Plasma

Test Code
Rheumatoid 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
Specimen Type Temperature Time
Serum SST Refrigerated 7 days
Red Top – Separated* Refrigerated 7 days
Plasma Li Hep Refrigerated 7 days
 
*Centrifuge and aliquot into a plastic vial.


Methodology
Immunoturbidimetric Nephelometric

Setup Schedule
Monday through Sunday; Continuously


Report Available
Same day


Reference Range
<15 IU/L


Performing Laboratory
North Colorado Medical Center Laboratory



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.