What is spirometry?

Spirometry is a standard test used to measure how well your lungs are functioning.
The test works by measuring airflow into and out of your lungs.
To take a spirometry test, you sit and breathe into a small machine called a spirometer.
A spirometer records the amount of air you breathe in and out and the speed of your breath.
Spirometry tests are used to diagnose these conditions:
COPD, asthma, restrictive lung disease (such as interstitial pulmonary fibrosis)
and other disorders affecting lung function