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How does a pulmonary function test help diagnose pulmonary fibrosis?

A pulmonary function test reveals how well your lungs function. The test is simple: you take a deep breath and blow into a device that records the amount and speed of your breath. If you have pulmonary fibrosis damage to your lungs, you will not be able to blow out a normal amount of air at a normal rate. Other lung problems such as asthma could cause abnormal results, so a pulmonary function test is used in combination with other diagnostic tests.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.