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Pulmonary function tests - Results

Alternative Names

PFTs; Spirometry; Spirogram; Lung function tests

Normal Values:

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

Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.

What abnormal results mean:

Abnormal results usually mean that you may have some chest or lung disease.

Spirometry

Reviewed last on: 11/12/2007
Andrew Schriber, M.D., F.C.C.P., Specialist in Pulmonary, Critical Care, and Sleep Medicine, Virtua Memorial Hospital, Mount Holly, New Jersey. Review provided by VeriMed Healthcare Network.

References

Mason RJ, Broaddus VC, Murray JF, Nadel JA. Murray and Nadel's Textbook of Respiratory Medicine. 4th ed. Philadelphia, Pa: Saunders; 2005.

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