Carboxyhemoglobin Test FAQ
What is a carboxyhemoglobin test?
Why is a carbon monoxide blood test important?
What type of specimen will I submit?
Do I need to fast to take this test?
How long does it take to get test results?
Accesa Labs does not provide medical advice, diagnosis or treatment. All users should consult with a medical provider for specific health concerns.
Carbon Monoxide Blood Test - More Information
The carboxyhemoglobin test, also known as a carboxyhemoglobin blood test, COHb test, and an HbCO test, measures the carboxyhemoglobin blood level.
Carboxyhemoglobin, or carbon monoxide, is a gas that can cause poisoning. Carboxyhemoglobin is found in red blood cells and is a molecule that is a combination of carbon monoxide and hemoglobin. Carbon monoxide combines with hemoglobin in the blood and decreases the amount of oxygen that can be carried. Carbon monoxide (CO) binds much more strongly (approximately 200 times) to hemoglobin than oxygen does and, in the setting of a CO exposure, tightly binds hemoglobin to form carboxyhemoglobin. Carboxyhemoglobin blocks oxygen from binding to hemoglobin and, in toxic levels, results in carbon monoxide poisoning (carboxyhemoglobinemia). Excessive exposure can occur from poor ventilation and gas engine smoke exposure. High carboxyhemoglobin levels are also found during industrial exposures and also in smokers.
To get a carboxyhemoglobin test near you, order online and get your blood drawn at Quest Diagnostics. Once the CO blood test lab report is ready, it will be available for electronic download. As can be seen on the sample carbon monoxide blood test report above, the carboxyhemoglobin blood levels are reported as a number and can be compared against the reference ranges and interpretations provided by the lab.
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