Arterial blood gases (ABGs) are tests that measure the levels of oxygen and carbon dioxide in the blood, as well as the blood's acidity (pH). These measurements help assess how well the lungs and kidneys are functioning and how effectively they are exchanging gases. ABGs are typically taken from an artery, often in the wrist, and provide crucial information about a person's respiratory and metabolic status. The results of an ABG test can indicate various health issues, such as respiratory failure, metabolic disorders, or lung diseases. Healthcare providers use this information to guide treatment decisions, monitor disease progression, and evaluate the effectiveness of therapies.