Pulmonary function tests

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Spirometry

PFTs; Spirometry; Spirogram; Lung function tests

Normal values are based upon the age, height, ethnicity, and sex of the person being tested. Normal results are expressed as a percentage. A value is usually considered abnormal if it is less than 80% of the predicted value for that person.

Abnormal results usually mean that a degree of chest or lung disease may be present.

Review Date: 02/27/2006
Reviewed By: David A. Kaufman, M.D., Assistant Professor, Division of Pulmonary, Critical Care & Sleep Medicine, Mount Sinai School of Medicine, New York, NY. Review provided by VeriMed Healthcare Network.