Carbon Dioxide

Test Code

310

CPT Codes
82374

Preferred Specimen

1 full unopened spun gel barrier tube

Minimum Volume

0.5 mL

Other Acceptable Specimens

Plasma collected in: Sodium heparin (green-top) tube or lithium heparin (green-top) tube

Instructions

Do not open tube

Transport Container

1 full unopened spun gel barrier tube

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 72 hours
Refrigerated: 72 hours
Frozen: 31 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Anticoagulants other than heparin • Red-top tube (no gel)

Methodology
Spectrophotometry (SP)

Setup Schedule

Daily

Report Available

1 day

Limitations

Proper specimen collection and processing are critical for reliable testing.

Reference Range

20-32 mmol/L

Clinical Significance

Measurements are used in the diagnosis and treatment of numerous potentially serious disorders associated with changes in body acid-base balance.

Performing Laboratory

Quest Diagnostics-Seattle

1737 Airport Way S Suite 200

Seattle, WA 98134-1636

Last Updated: November 6, 2024

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.