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CO2 test - serum

Information, Symptoms, Treatments and Resources

What is CO2 test - serum?

CO2 is carbon dioxide. A serum CO2 test measures the amount of carbon dioxide in the liquid part of your blood.

In the body, most of the CO2 is in the form of a substance called bicarbonate (HCO3-). Therefore, the CO2 blood test is really a measure of your bicarbonate level.

See also: Blood gases

Alternative Names:

Bicarbonate test; HCO3-; Carbon dioxide test; TCO2; Total CO2

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