Spirometry is a common and essential diagnostic tool used to assess how well your lungs are functioning. It measures the volume of air you can inhale and exhale, as well as how quickly you can breathe out. This test is particularly useful in diagnosing conditions such as asthma, chronic obstructive pulmonary disease (COPD), and other respiratory disorders. During the test, a healthcare professional will guide you to take a deep breath and then exhale forcefully into a tube connected to a spirometer. The results can help doctors determine the best course of treatment and monitor the effectiveness of ongoing therapies. It's a quick, non-invasive procedure that provides valuable insights into your respiratory health.