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Laboratory Test Directory

Carbon Dioxide (CO2) (Updated)

Components

Name Method Department Units
Carbon Dioxide Enzymatic, reflectometry
Core Lab, Chemistry, Routine mmol/L

Specimen Requirements

Plasma Spun, Serum Spun

Container Type Container Size Specimen Volume
Preferred

Green tube (Lithium heparin), with Gel

3 mL 3 mL
Alternate

Green tube (Lithium heparin), No Gel

3 mL 3 mL
Alternate

Green tube (Lithium heparin), No Gel

Micro sample tube 1 mL
Alternate

Gold tube, (SST) with Gel

3.5 mL 3.5 mL
Alternate

Red tube, (no anticoagulant), No Gel

3 mL 3 mL
Alternate

Green tube (Lithium heparin), with Gel

Micro sample tube 0.3 mL
Stability

Room temperature - 24 hour(s)
Refrigerated - 3 day(s)
Frozen - 1 month(s)

Specimen Preparation

  • Centrifuge within 4 hours, separate supernatant and refrigerate

Reasons for Rejection

  • Gross hemolysis
  • Not received at proper temperature
  • Not received within specified time frame

Comments

Exposure of the specimen to air will result in decrease in CO2. Keep specimen covered, tightly capped and fill collection tubes completely, if possible.

CPT Code

  • 82374