Pulmonary Function Tests
Pulmonary function tests (PFTs) are a group of breathing tests. They can show how well your lungs are working. PFTs may measure:
- How much air you can blow out
- How much air your lungs can hold at different times
- How fast you are blowing air out
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PFTs may be used to diagnose lung conditions or diseases, such as:
These tests may also be done to:
- Measure how much a lung problem is affecting you
- Evaluate symptoms such as coughing, wheezing, and trouble breathing
- Evaluate your lung function before or after a surgery
- Determine how well a treatment is working
Last reviewedAugust 2014by Michael Woods, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.