Spirometry, which means “the measuring of breath,” is a routinely used pulmonary function test (PFT) that measures the amount and speed of air that a person can inhale and exhale. Results from the test can be used to estimate lung function and aid in the diagnosis of certain respiratory disorders.

What do spirometry results mean?

This test measures how much air you can breathe in and out of your lungs, as well as how easily and fast you can the blow the air out of your lungs. Your doctor may order spirometry if you have wheezing, shortness of breath, or a cough.

What do spirometers measure?

A spirometer is a diagnostic device that measures the amount of air you're able to breathe in and out and the time it takes you to exhale completely after you take a deep breath.