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Carbon Dioxide (Total CO2), serum

Test Code
CO2


Preferred Specimen
Serum, 0.5 mL minimum


Instructions
Keep sample tightly capped at all times.


Transport Container
SST tube


Transport Temperature
Clotted unspun specimen stable for 2 hours; uncapped separated specimen stable for 4 hours at room temp., separated specimen, capped, stable for 4 days if refrigerated.


Reference Range
See report for normal ranges. Critical Values: Adults <10 or >40 mmol/L, Pediatrics <15 or >40 mmol/L


Clinical Significance
Knowledge of the total CO2 in serum together with other clinical and laboratory information (pH, pCO2), is necessary for the evaluation of the acid-base status.




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.