How to use a pulse oximeter
Track your oxygen level and pulse with this simple tool.
Track your oxygen level and pulse with this simple tool.
A pulse oximeter is a small, easy-to-use tool about a few inches long. You can use it to measure the oxygen in your blood.
Most pulse oximeters clip on your finger. It shines a beam of light that passes through your skin and bounces back. It then “reads” that light to figure out how much oxygen is in your blood. It will also tell you your pulse (heart rate).
Your body needs oxygen to live. When you breathe, your lungs pull oxygen from the air into your blood. Then your blood carries that oxygen to every cell in your body. You need a certain level of oxygen to be healthy.
Here are some examples of when people usually use a pulse oximeter:
Most pulse oximeters come with directions. But here are the basic steps:
To get the best results with a pulse oximeter:
You may get a poor reading if you have:
You may also get poor results if you smoke or use tobacco.
Some people have used pulse oximeters to check their oxygen levels when they think they have COVID-19. If you think you have COVID-19, call your doctor.
You can also check with the Centers for Disease Control and Prevention (CDC). The CDC has the most up-to-date list of symptoms and directions for testing and getting care.
Sources:
The information provided is for general informational purposes only and is not intended to be medical advice or a substitute for professional health care. You should consult an appropriate health care professional for your specific needs.