There are two separate mechanisms by which diffusing capacity may be reduced.
Testing Diffusing Capacity
Testing for diffusing capacity is often done along with otherpulmonary function tests.
In this test, a mask is placed over your face.
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The gas you breathe in will contain carbon monoxide as well as a tracer gas such as helium.
This test is often referred to as DLCO which stands for diffusion across the lungs of carbon monoxide.
Causes of Low Diffusing Capacity
There are several conditions that may result in low diffusing capacity.
A Word From Verywell
Diffusing capacity is but one test that is used to evaluate lung diseases.
National Institute of Health Medline Plus.Lung diffusion testing.
Cleveland Clinic.Gas diffusion study: Results and follow-up.
Cleveland Clinic.Gas diffusion study: Test details.
McCormack, M.Diffusing capacity for carbon monoxide.
