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How do lung function tests help diagnose asthma?

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Lung function tests are also called pulmonary function tests. They’re simple breathing tests to diagnose lung problems. The two most common are spirometry and methacholine challenge tests. These two tests, along with a history and physical exam, are how doctors usually diagnose asthma.

SOURCES: National Institutes of Health web site: "Asthma." American Academy of Allergy, Asthma, and Immunology web site: "Patient Gallery: Other diseases related to asthma."  National Asthma Education and Prevention Program: "Considerations for Diagnosing and Managing Asthma in the Elderly" and "Guidelines for the Diagnosis and Management of Asthma." American Lung Association web site: "Asthma in Adults Fact Sheet."



Reviewed by Carol DerSarkissian on February 28, 2018

SOURCES: National Institutes of Health web site: "Asthma." American Academy of Allergy, Asthma, and Immunology web site: "Patient Gallery: Other diseases related to asthma."  National Asthma Education and Prevention Program: "Considerations for Diagnosing and Managing Asthma in the Elderly" and "Guidelines for the Diagnosis and Management of Asthma." American Lung Association web site: "Asthma in Adults Fact Sheet."



Reviewed by Carol DerSarkissian on February 28, 2018

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How does spirometry help with the diagnosis of asthma?

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