Carbon Monoxide Diffusing Capability Test

**Semantic type:** Diagnostic Procedure

**Definition:** A measurement of carbon monoxide (CO) transfer from inspired gas to pulmonary capillary blood. During the test, the subject inspires a gas containing CO and one or more tracer gases to allow determination of the gas exchanging capability of the lungs.

**Synonyms:** - DLCO - DLCO - DLCO - Diffusion Capacity of Lung for CO - Diffusion Capacity of Lung for CO - Diffusion Capacity of the Lung for Carbon Monoxide - PFT/DLCO - Pulmonary Function Test/Carbon Monoxide Diffusing Capability - TLCO - Transfer Factor of Lung for CO