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CO2, TOTAL

Message
Keep tightly capped to prevent evaporation of CO2. Collect a full tube, following standard venipuncture techniques.


Test Code
LAB55 CO2


Alias/See Also
CO2


CPT Codes
82374

Instructions
Processing Instructions (Lab use only): Centrifuge and separate cells after clot formation and within 4 hours of collection. Minimum Testing Volume: 0.1 mL Serum or Plasma Transport Temperature: Refrigerated Stability: Ambient: 24 hoursRefrigerated : 7 daysFrozen: 2 weeks Causes for Rejection: Unlabeled, mislabeled, wrong tube type, QNS, severely hemolyzed samples


Clinical Significance
1230130032



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.