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Lung diffusion testing

Lung diffusion testing

Overview

Lung diffusion testing measures how well oxygen passes from the air sacs in the lungs into the blood.

Review Date 11/25/2023

Updated by: Denis Hadjiliadis, MD, MHS, Paul F. Harron Jr. Professor of Medicine, Pulmonary, Allergy, and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.