Pulmonary Function


What is a pulmonary function test?

Lung function tests (also called pulmonary function tests) include a variety of tests that check how well the lungs work. This test measures the amount of air the lungs can hold and how forcefully one can empty air from the lungs.

What to expect?

The test is performed by a pulmonary function technician, who will require you to use maximal effort to blow out and breathe in air. The tests are repeated several times to make sure the results are accurate. The duration of the test is approximately 45 minutes to 1 hour.

How to prepare for the test?

  • If you are using a short-acting inhaler that is used only as needed, do not use for four to 6 hours prior to testing.
  • Do not take any antihistamines, cough medication, or cough suppressants at least 6 hours prior to your test.
  • We recommend a light breakfast or lunch.
  • Withhold from taking caffeinated drinks, alcoholic beverages, smoking and/or exercise at least 6 hours prior to your test.
  • Women; do not wear lipstick nor foundation.
  • If you use oxygen, please bring it to your appointment.
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