Electrolytes keep the body’s fluid balance in check and help maintain heart rhythm, muscle contractions, and brain function. This test measures levels of electrolytes, including sodium, chloride, and potassium in the blood, along with bicarbonate levels. People experiencing the following symptoms may receive a CO2 blood test:Ī healthcare professional will likely perform a CO2 blood test as part of an electrolyte panel to check a person’s bicarbonate, a form of CO2, levels. They may also recommend it in the case of a medical emergency or just before surgery. It is normal to experience a slight feeling of discomfort from where the nurse drew the blood, but this is temporary and will resolve on its own.Ī healthcare professional may order a CO2 as part of a routine checkup or to investigate the underlying cause of certain symptoms. A nurse or healthcare professional will make a tiny prick in the person’s arm and collect blood in a test tube to send away for testing. The test procedure usually takes around 2–5 minutes. Both components are indicators of blood oxygenation. An arterial blood draw measures the particle pressure of carbon dioxide. They may take blood from either an artery (an arterial blood draw) or a vein (a venous blood draw).Ī venous blood draw provides a measure of bicarbonate levels. ![]() The CO2 blood test detects changes in the blood’s acidic content.Ī healthcare professional can measure the levels of CO2 in a person’s blood using a simple blood test. ![]() Any disruption to this balance can be an early sign of an underlying medical condition.Ĭarbon dioxide is an “acidic” component because it combines with water to form carbonic acid. It mainly occurs in the form of bicarbonate.Īs part of its normal functions, the human body naturally produces certain acids and bases that balance each other. The CO2 blood test measures the amount of carbon dioxide in the blood, which is present in the form of CO2, bicarbonate (HCO3), and carbonic acid (H2CO3). Share on Pinterest Measuring a person’s blood CO2 levels can help diagnose a number of medical conditions.
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