Days Set Up
Monday - Friday
Analytic Time
1 - 2 days
MiChart Code
Carbon Monoxide, Blood
Soft Order Code
CO2B
Test Updated:
Synonyms
Carboxyhemoglobin, Blood
CO
CO2B
Carboxy Hemoglobin
Looking to order a test?
We’ve provided helpful links to make ordering easy.
Find a RequisitionAll specimens should be accompanied by a requisition.
Submitting SpecimensLearn about how to properly label and where to ship specimens.
Order Kits and SuppliesMLabs provides all the supplies necessary for the collection of specimens.
Test FAQVisit our provider FAQ and learn about common questions to ordering tests.
Test Overview
Test Methodology
Carboxyhemoglobin-Co-oximetry
Test Usage
Verifying CO toxicity in cases of suspected exposure.
Reference Range
Normal Concentration: Non-smokers: 0 - 2%; Smokers: <or= 9%. Toxic Concentration: >or= 20%.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Billing Information
CPT Code
82375
Pro Fee Code
LOINC
20563-3