Lung diffusion testing

Injury	Disease	Nutrition	Poison

Symptoms	Surgery	Test	Special Topic

Overview

Risks

Results

Lung diffusion testing

Alternative Names:

Diffusing capacity; DLCO test

Normal Values:

Normal test results depend on a person's age, sex, and height.

What abnormal results mean:

Abnormal results generally mean that gases do not move normally across the lung tissues. This may mean that lung diseases, such as interstitial fibrosis, sarcoidosis, asbestosis, and emphysema, are present.

References:

Lamberto C, Nunes H, Le Toumelin P, Duperron F, Valeyre D, Clerici C. Membrane and capillary blood components of diffusion capacity of the lung for carbon monoxide in pulmonary sarcoidosis: relation to exercise gas exchange. Chest. 2004 Jun;125(6):2061-8.

Mohsenifar Z, Lee SM, Diaz P, et al. Single-Breath Diffusing Capacity of the Lung for Carbon Monoxide: A Predictor of PaO2, Maximum Work Rate, and Walking Distance in Patients With Emphysema. Chest 123: 1394-1400.

Review Date: 8/10/2005
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.

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