Effect of the analyzed hair length on fatty acid ethyl ester (FAEE) concentrations in hair - Is there congruence of cut-offs for 0-3 and 0-6 cm hair segments?

摘要

Background: According to the current SoHT consensus for the use of alcohol markers in hair FAEEs can be analyzed in the proximal 0-3 or 0-6 cm segment with the cut-offs 0.2 and 0.4 ng/mg for abstinence assessment and 0.5 and 1.0 ng/mg for chronic excessive alcohol consumption. Both sets of cut-offs should be congruent for uniform interpretation.