Spirometry is a standard test doctors use to determine how well your lungs function. A score that measures airflow into and out of your lungs can help diagnose COPD and determine the best treatments.

Take a big deep breath in, up, up, up, up! Suck it in – blow hard! Blast out fast! Blow it out, blow it out, blow it out, blow, blow, blow. Breathe deep, up, up, up, up and catch your breath He ...