Pulmonary Function Testing

Breathing tests to evaluate lung function and support accurate asthma diagnosis.

Pulmonary Function Testing for Asthma

Man testing breathing function by spirometry. Diagnosis of respiratory function in pulmonary disease

What Is Pulmonary Function Testing?

Pulmonary function testing (PFT) is used to measure how well your lungs are working. It helps assess airflow and lung capacity.
This testing is commonly used to:

  • Diagnose asthma

  • Monitor asthma control

  • Evaluate breathing difficulties

How the Test Works

During the test:

  • You will breathe into a specialized device

  • Measurements of airflow and lung function are recorded

  • Results are analyzed by your physician

The test is non-invasive and typically completed during your visit.

Adult man with nose clip breathing into mouthpiece of spirometer while doctor looking at computer screen
Young man testing breathing function by spirometry having health problem.

Why This Test Is Important

Pulmonary function testing provides objective data that helps:

  • Confirm an asthma diagnosis

  • Determine severity

  • Guide treatment decisions

  • Monitor response to therapy

Who Should Have This Test

Testing may be recommended if you:

  • Experience wheezing or shortness of breath

  • Have persistent cough

  • Have been diagnosed with asthma

  • Need monitoring of asthma control

Senior hispanic man man testing breathing function by spirometry. Diagnosis of respiratory function in pulmonary disease
Adult man testing breathing function by spirometry having health problem. Diagnosis of respiratory function in pulmonary disease.

What to Expect After Testing

Your physician will review your results and may recommend:

  • Adjustments to your treatment plan

  • Medication changes

  • Follow-up testing

  • Ongoing monitoring

Evaluate Your Lung Function

Schedule pulmonary function testing with AASP.

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