Pulmonary function test

Pulmonary function test is a test where you blow air in to a machine. It is done to see how well your lungs are functioning..


What is it?

Pulmonary function tests are a group of tests that measure how well the lungs take in and release air and how well they move gases such as oxygen from the atmosphere into the body’s circulation.

Why is it done?

In order to: Diagnose certain types of lung disease (such as asthma, bronchitis, and emphysema). Find the cause of shortness of breath. Measure whether exposure to chemicals at work affects lung function. Check lung function before someone has surgery.

How long does it take?

30 – 60 minutes

How to prepare:

Do not eat a heavy meal right before the test, and avoid caffeinated foods or drinks. Do not smoke or exercise strenuously for six hours before the test. On the day of the test, wear loose clothing that won’t restrict your breathing and avoid food or drinks that have caffeine.