Impact of Common and Understudied Technical Errors on DLCO
Apr 12, 2026

Common technical errors can inflate DLCO through two predictable mechanisms: VA inflation (dilution) and KCO elevation at low volume. An elevated DLCO may generate concern and a normal DLCO is generally reassuring, yet these data show that it can be artifactually high due to subtle errors. Teaching these subtleties and embedding them into quality control practices can prevent reporting or misinterpreting erroneous data.


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