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Test Code LAB55 Carbon Dioxide (CO2)/Bicarbonate

Department

CHEMISTRY

Primary Collection Container

Green PST (Lithium Heparin)

Alternate Collection Container

Green Microtainer PST

Transport

Refrigerated

Preferred Transport Temperature

Refrigerated

Processing

Centrifuge and refrigerate.

Deliver to Chemistry Department ASAP.

Stability

24 hours capped; 4 hours uncapped

Minimum Testing Volume

0.5 mL

Reference Range

0-1mo 16-28 mmol/L

1mo-1yr 15-28 mmol/L 1yr-5yr 13-29 mmol/L 5yr-10yr 18-29 mmol/L 10yr-15yr 17-30 mmol/L >15yr 22-32 mmol/L

Methodology

Enzymatic procedures using phosphoenolpyruvate carboxylase (PEPC) on the Roche c503..

Performed

Sunday – Saturday

Reported

As completed

CPT Codes

82374

Unacceptable Conditions

Samples for CO2 readily decompose losing TCO2. Specimens should be analyzed ASAP.