Whathappens during a spirometry test

You'll be seated during the test and a soft clip will be placed on your nose to stop air escaping from it. The tester will explain what you need to do and you may be asked to have a few practice attempts first. When you're ready for the test, you'll be asked to: inhale fully, so your lungs are completely filled with air close your lips tightly around the mouthpiece exhale as quickly and forcefully as you can, making sure you empty your lungs fully This will normally need to be repeated at least three times to ensure a reliable result. In some cases, the test may need to be repeated around 15 minutes aftertaking some inhaled bronchodilator medication. This can show if you have a lung condition that responds to these medications. Overall, your appointmentshould last around 30-90 minutes. You'll be able to go home soon after the tests have finished and can return to your normal activities.