CO2, Total, Serum/Plasma


Sunquest Code:CO2  
Epic Code:LAB55Epic Name:CO2 Total
Order Instructions:Order CO2W for whole blood specimens.
Synonyms:Carbon Dioxide; Bicarbonate; CO2; Electrolytes
Methodology:Bichromatic rate
CPT Code:82374
Turnaround Time:Performed and reported 24 hours/day.


Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Container:Green (lithium heparin, gel) (Green (lithium heparin) on ICE, Red (no gel), Red or gold (gel))
Causes for Rejection:Specimen not separated from cells within 2 hours of collection (4 hours for Home Health specimens).


Processing and Shipping

Specimen Processing:Process within 2 hours (4 hours for Home Health specimens). Preferably, retain in primary container; do not remove stopper. Aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Chemistry  (University of Minnesota Health Maple Grove Clinics, Fairview Range - FRMC, UMMC-East Bank, Oxboro Bloom, Fairview Lakes - FLMC, Fairview Ridges - FRH, Fairview Northland - FNMC, Fairview Southdale - FSH, UMMC/UMMCH-West Bank, M Health Clinic and Surgery Center, Grand Itasca GICH)


Interpretive

Critical Range:Less than 11 mmol/L and greater than 45 mmol/L
GICH: Less than 10 mmol/L and greater than 40 mmol/L
Reference Range:0-11 mo: 17-29 mmol/L; 1 year and older: 20-32 mmol/L
GICH: All ages 21-31 mmol/L
Use:Monitor and treat acid/base imbalances.


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