Spirometry is a pulmonary function test used to measure lung capacity and airflow. It helps diagnose conditions like asthma, chronic obstructive pulmonary disease (COPD), and other respiratory disorders. This test is particularly important for individuals working in environments where lung health is at risk or for those with a history of breathing problems. The procedure is quick, non-invasive, and provides immediate results. Regular testing can help monitor lung function and guide treatment plans.