Spirometry is a standard test doctors use to ... Depending on your FEV1 and FVC readings, your doctor will stage your COPD based on the following: The first stage is considered mild.Your FEV1 ...

A spirometry test, also known as a pulmonary function test, is traditionally used to diagnose COPD. It measures lung function through the quantity of air that can be inhaled and exhaled as well as ...