Hair EtG: Alterations in Segment Levels Accompanying Hair Growth

    August 2018 in “ Drug testing and analysis ”
    Jan Toralf Fosen, Gudrun Høiseth, Cristina Sempio, Nefele Giarratana, Asle Enger, Jörg Mørland, Luca Morini
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    TLDR EtG levels in hair decrease significantly after one month of alcohol abstinence.
    The study investigated changes in ethyl glucuronide (EtG) levels in hair during an ethanol-abstinent period among 27 patients from an alcohol treatment clinic. Hair samples were collected at two time points: immediately after hospitalization (T1) and after one month of abstinence (T2). The median EtG concentration significantly decreased from 100 pg/mg at T1 to 53.4 pg/mg at T2, with a median change of -46.0% (p = 0.003). The findings suggested a decrease in EtG levels in hair segments over time, potentially due to wash-out effects or other factors, warranting further research.
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