You may need a blood gas (ABG) test to measure the amount of oxygen and carbon dioxide in the blood. It may also be used to determine the pH of the blood, or how acidic it is. A blood gas test ...
What Is an Arterial Blood Gas Test (ABG)? An arterial blood gas (ABG) test measures oxygen and carbon dioxide levels in your blood. It also measures your body’s acid-base (pH) level, which is usually ...