What are the published performance standards 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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Recommendations for a standard technique for the test were first published by the American Thoracic Society (ATS) in 1995. A joint task force from the ATS and the European Respiratory Society (ERS) published updated standards in 2017. [7] The updated standards include some important changes in the criteria used to determine the technical acceptability and expected repeatability of measurements, as well as recommendations on the increased utility of the procedure when rapid-responding gas analyzer (RGA) technology is used. RGA technology has been available for over a decade and most commercial equipment currently sold uses the RGA technology. It is likely that most of the slower-responding analyzer technology will phased out by equipment replacement over the coming decade.

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