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Triball Incentive Spirometer

Pulmonary Function Testing

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What is a pulmonary function test? 

A pulmonary function test (PFT) evaluates lung function by measuring the amount of air your lungs hold and how fast the air enters and exits the respiratory system. Patients will blow into a mouth piece as a machine measures the flow of air based and compares your values to normal controls.


What diseases does pulmonary function help diagnose?

Pulmonary function testing evaluates for restrictive or obstructive lung conditions and at Avant Allergy, Dr. Sandra A. Ho uses PFTs to diagnose and monitor response to treatment for asthma. 


Are there any risks to pulmonary function tests? ​

PFTs are safe for most patients and can be quickly performed in the office. For patients with decreased lung capacity, these tests may cause dizziness, coughing, shortness of breath, or asthma attacks. 


How do I prepare for a pulmonary function test? 

  • Dr. Ho may advise to stop certain medications prior to test that may affect results 

  • Large meals, caffeine, strenuous exercise, smoking are to be avoided prior to pulmonary function testing


If you are seeking testing for respiratory disease, pulmonary function testing at Avant Allergy in Los Angeles, California can aid in diagnosis of your issue. Call to schedule an appointment or use our online booking tool.

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