Breathing and lung function tests

Find about the tests that can be done to investigate breathing problems. 

These include tests to measure how well your lungs are working, to measure levels of oxygen and carbon dioxide in your blood, to measure your ability to exercise, or to study what happens to your breathing when you’re asleep

We’re grateful to the Association for Respiratory Technology and Physiology for its help in creating this information. 

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Last medically reviewed: January 2017. Due for review: January 2020

This information uses the best available medical evidence and was produced with the support of people living with lung conditions. Find out how we produce our information. If you’d like to see our references get in touch.