What are the patient preparations for a diffusing capacity of lung for carbon monoxide (DLCO) test?

Updated: May 14, 2020
  • Author: Kevin McCarthy, RPFT; Chief Editor: Nader Kamangar, MD, FACP, FCCP, FCCM  more...
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Refrain from smoking for several hours before the test. Alcohol vapors can affect the accuracy of some fuel cell types of CO analyzers, thus alcoholic beverages should be withheld for eight hours.

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