how do you check lung health
Lung function tests, also called pulmonary (PULL-mun-ary) function tests, measure how well your lungs work. These tests are used to look for the cause of breathing problems, such as shortness of breath. Lung function tests measure: 1  How much air you can take into your lungs.2  How much air you can blow out of your lungs and how fast you can do it. 3  How well your lungs deliver oxygen to your blood. 4  The strength of your breathing muscles.ung function tests include breathing tests and tests that measure the oxygen level in your blood. The breathing tests most often used are: 1  Spirometry (spi-ROM-eh-tre). 2  This test measures how much air you can breathe in and out.