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Spirometry

Spirometry (Lung Function Tests)

This is a non invasive test used to assess how well your lungs work by measuring how much air you inhale, how much you exhale and how quickly you exhale. 

Your doctor may want you to have a spirometry test if he or she suspects your signs or symptoms may be caused by a chronic lung conditions such as:

  • COPD
  • Asthma
  • Pulmonary fibrosis

If you've already been diagnosed with a chronic lung disorder, spirometry may be used periodically to check how well your medications are working and whether your breathing problems are under control.

Follow your doctor's instructions about whether you should avoid use of inhaled breathing medications or other medications before the test. Other preparations include the following:

  • Wear loose clothing that won't interfere with your ability to take a deep breath.
  • Avoid eating a large meal before your test, so it will be easier to breathe.