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Laboratory Test Directory

CO2, Fluid


Name Method Department Units
CO2, Fluid Enzymatic, reflectometry
Core Lab, Chemistry, Routine mmol/L

Specimen Requirements

Body fluid

Container Type Container Size Specimen Volume

Green tube (Lithium heparin), No Gel

3 mL 3 mL

Red tube, (no anticoagulant), No Gel

3 mL 3 mL

Refrigerated - 3 day(s)
Room temperature - 24 hour(s)
Frozen - 30 day(s)

Specimen Preparation

  • Centrifuge within 1 hour, separate supernatant and refrigerate
  • Ship entire specimen to laboratory refrigerated

Reasons for Rejection

  • Sample too viscous


Identify fluid type. Not all fluids can be assayed. Interpret results with caution. Reference ranges are not available.

CPT Code

  • 82374