Aug 22, 2017




Clinical Hub,Tools & Resources,UWHC Lab Test Directory,Blood Gas

Carbon Monoxide

Carbon Monoxide (GM2350) Blood Gas Lab Test

Name: Carbon Monoxide

Test Name: Carbon Monoxide

Health Link Test Code: GM2350

LIS Test Code: CO

CPT Code(s): 82375

Methodology: Spectrophotometry

Clinical Information:

Test measures carboxyhemoglobin. The level of carboxyhemoglobin is a measure of the degree of carbon monoxide exposure.

Days Performed: Daily, 24 hours.

Stat In-Lab Turnaround Time: Less than 30 minutes.

Specimen: Arterial, venous, or capillary

Collection Container: Radiometer PICO® syringe

Also Acceptable: 2 full Radiometer capillary tubes, Green top

Collection Instructions:

Radiometer "PICO"® syringes must be free of clots. Two full Radiometer capillaries free of clots are needed for capillary blood.

Collection Volume: 1.5 mL

Pediatric Collection Volume: 0.5 mL

Stability Ambient:

24 hours (syringe or tube must remain capped at all times)


Stability Refridgerated:

24 hours (syringe or tube must remain capped at all times)

Stability Frozen:

Not acceptable

Sample Analyzed: Whole Blood

Testing Volume: 1.5 mL

Pediatric Testing Volume: 0.5 mL

Specimen Processing:

If collected in a green-top tube DO NOT centrifuge, DO NOT open.  Send whole blood to Lab.

Specimen Transport:

Transport specimen to UWHC Hospital Laboratory immediately.  

Unacceptable Criteria:

Clotted specimens, or specimens past stability time are not acceptable.


0 day and up: 0-2% (smokers may be higher)

Interpretation Type: Reference Interval

Effective Date of Reference Range: Mon, 06 Jun 2016 07:00:00 CDT

Critical Calls: yes