Breathing and lung function tests

Lots of tests can be done to investigate breathing problems. This information will tell you what to expect.

• How can I prepare for a breathing or lung function test?
• Tests for breathing
• Tests for oxygen levels
• What is exercise capacity? How is it measured?
• Tests to measure breathing during sleep
• How do health care professionals measure the sensitivity of the airways?
• Which scans are used to take a picture of the lungs?
• Which tests are used to look inside the lungs?

We also have information about what each test involves.

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

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About our health information

All our lung health information is developed using the latest evidence, with the support of health care professionals and people with lung conditions. 

Last medically reviewed: January 2020. Due for review: January 2023

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.