How to Measure Blood Oxygen?
Pulse oximetry and arterial blood gas tests are methods to measure how much oxygen is in your blood.[1] Normal oxygen saturation levels range from 97% to 99% in healthy people.[2] When your blood oxygen is too low, it’s called hypoxemia.[3] Your doctor may ask you to take a blood oxygen level test because of a variety of medical conditions and procedures. Both pulse oximetry and arterial blood gas tests are widely used; the latter may be more accurate, but the former can be used to monitor blood oxygen levels over a period of time.
Contact a health professional to receive an arterial blood gas test. Your doctor or other medical professional can accurately measure your blood oxygen level using advanced techniques and equipment.
Prepare for the procedure.[8] While the arterial blood gas test is common and quite safe, you will still want to prepare for the procedure. Talk to your doctor to make sure you understand the test, and ask questions any questions you may have about it.
Know the risks. The arterial blood gas test is a routine procedure, and there is little chance of serious issues developing as a result of it.
Have a health professional select the test site. To measure blood oxygen with this method, blood must be drawn from an artery. Usually, one in your wrist (the radial artery) is chosen, although blood can also be drawn from an artery in your groin (the femoral artery) or from your arm above the elbow (the brachial artery)
Have a health professional select the test site. To measure blood oxygen with this method, blood must be drawn from an artery. Usually, one in your wrist (the radial artery) is chosen, although blood can also be drawn from an artery in your groin (the femoral artery) or from your arm above the elbow (the brachial artery)
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