Carbon Dioxide

The carbon dioxide (CO2) blood test measures the level of carbon dioxide in your blood. Carbon dioxide is a waste product produced by the body’s metabolism and is transported through the bloodstream to the lungs, where it is exhaled.

The test is typically performed by taking a blood sample, usually from a vein in your arm, which is then analyzed in a laboratory. Carbon dioxide levels are reported in millimeters of mercury (mmHg) or as bicarbonate (HCO3-) levels in milliequivalents per liter (mEq/L).

The carbon dioxide blood test is used to assess acid-base balance in the body and to evaluate lung and kidney function. It helps determine how well your body is able to regulate and eliminate carbon dioxide.

The normal range for carbon dioxide levels in the blood may vary depending on the laboratory and the specific testing method used. However, the general normal range for carbon dioxide levels in adults is approximately 23 to 29 mmHg or 23 to 29 mEq/L.

It’s important to note that interpretation of the test results should be done in consultation with a healthcare professional. They will consider your symptoms, medical history, and other factors to make an accurate diagnosis and determine the appropriate treatment plan, if necessary.

Treatment for abnormal carbon dioxide levels depends on the underlying cause. If carbon dioxide levels are too high (hypercapnia), it may indicate a respiratory or metabolic disorder that needs to be addressed. If carbon dioxide levels are too low (hypocapnia), it may indicate hyperventilation or another condition that requires attention.

Monitoring and managing carbon dioxide levels are important for maintaining the body’s acid-base balance and overall health. Your healthcare professional will guide you on the appropriate treatment and follow-up based on your specific situation.