![]() You'll sit on a chair with a soft clip on your nose.There are different ways to do each type of lung function test. What happens during lung function testing? Other names: pulmonary function tests, PFTs Your health care provider may order one or more lung function tests, depending on the reason you need to be tested. Cardiopulmonary (heart and lung) exercise test (CPET).There are different types of tests that measure how well your lungs work when you are active, including: This test measures how well your lungs deliver oxygen to your blood from the air you breathe. It also measures the amount of air that remains in your lungs after you exhale as much as you can. This test is the most accurate way to measure the amount of air your lungs can hold. Lung volume test, also called as body plethysmography.A spirometry test measures how much air you breathe out and how fast you can blow air out of your lungs. This lung function test is used the most. Your airways are the parts of your body that carry air to your lungs, including your nose, throat, trachea (windpipe), and bronchial tubes that connect your windpipe to each lung. Lung function tests also help check the health of your airways. How well your lungs absorb oxygen from the air you breathe and move it into your blood. ![]() How well you move air in and out of your lungs when you breathe.The mouthpiece is connected to a device that makes different types of measurements, such as: Most of them involve breathing through a mouthpiece. ![]() There are many types of lung function tests. They may be used with other tests and information to help diagnose and monitor certain lung diseases. These tests are also called pulmonary function tests, or PFTs. Lung function tests are a group of tests that check how well your lungs are working.
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