A CO2 blood test measures the amount of carbon dioxide (CO2) in the blood serum, which is the liquid part of blood. It’s typically used to screen for kidney, respiratory, or metabolic disorders. You ...

Carbon dioxide (CO2) blood tests evaluate the presence of the gas in your blood. If your CO2 levels rise too high or fall too low, the test results may be an indication that you have a health ...

Doctors can check people’s blood for typical or atypical carbon dioxide (CO2) levels to help diagnose certain medical conditions. For example, a carbon dioxide test or CO2 test can help diagnose ...