Pulmonary Function Test (PFT)

A Pulmonary Function Test (PFT) is used to diagnosed a lung disease and measure the severity of lung problems. This is also used to know if a treatment is working for your lung disease, evaluates how your lungs work, measures how much air you can inhale and exhale and how fast you can blow the air out of your lungs and measures how your lungs respond to small amount of allergens that may be causing asthma or wheezing.


Hold bronchodilators medication (inhalers and puffers) 4-6 hours prior to the test.

Hold steroids medication (inhalers and puffers) 12 hours prior to the test.

No caffeinated drinks, no smoking or no exercise strenuously 12 hours prior to the test.

Light meals is allowed makes sure you are not full.

Wear loose or comfortable clothing.