Pulmonary function tests, including pulmonary stress tests, are breathing tests that indicate how well your lungs are working, including how much air you can blow out, how much air your lungs can hold and how hard you can blow air out.

How You Benefit

Pulmonary function testing helps your doctor see the lungs at work, providing important information for accurately diagnosing symptoms such as coughing, wheezing or trouble breathing and determining the most effective treatment options. Pulmonary stress tests help determine if lung cancer patients have the capacity to undergo surgery.

What to Expect

Learn more about pulmonary function testing, including what to expect and how to prepare for the procedure, in our online Health Library.