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Pulmonary function tests (PFTs) determine how well your lungs work. They determine how much air goes into and out of your lungs, how much air goes from your lungs to your blood and how well your. Mar 23, 2026 · Pulmonary function tests, or PFTs, help show how well your lungs are working. Your healthcare provider may recommend that you get this test to help figure out why you are feeling short. There are many different pulmonary function tests (PFTs) that assess how well your lungs work. Your Aurora doctor may recommend one or more lung function tests if you’ve had excessive coughing,.

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