Arterial blood gas analysis is a medical test that measures the levels of oxygen, carbon dioxide, and acidity (pH) in the blood. It is typically performed on blood drawn from an artery, often in the wrist. This test helps assess how well the lungs and kidneys are functioning and can indicate issues such as respiratory or metabolic disorders. The results of an arterial blood gas analysis provide critical information about a patient's respiratory status and overall metabolic balance. Healthcare providers use this data to guide treatment decisions, monitor disease progression, and evaluate the effectiveness of therapies.