An arterial blood gas test measures the acidity (pH) and the levels of oxygen and carbon dioxide in the blood from an artery. This test is used to check how well your lungs are able to move oxygen into the blood and remove carbon dioxide from the blood.
Preparation: Please notify the respiratory therapist if you are on and anti-coagulation medication (blood thinners). Fasting is not required.Test Procedure: A small sample of blood will be drawn from an artery, either in your wrist or your elbow. The therapist will then hold tight pressure until the bleeding has stopped.
Length of Time: Approximately 15 minutes