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RHEUMATOID FACTOR

Message
Collect a full tube, following standard venipuncture techniques.


Test Code
LAB206 RF


Alias/See Also
RF


CPT Codes
86431

Instructions
Processing Instructions (Lab use only): Centrifuge and separate cells after clot formation and within 4 hours of collection. Minimum Testing Volume: 0.25 mL Transport Temperature: Refrigerated Stability: Ambient: N/A Refrigerated : 2 daysFrozen: >2 daysHomogenize the specimen before analysis if frozen.Avoid multiple freeze thaws.Causes for Rejection: Unlabeled, mislabeled, wrong tube type, hemolyzed, visually lipemic, QNS, exceeds specimen/stability requirements.


Clinical Significance
1230130096



Last Updated: May 18, 2026


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.