Journal
INTERNATIONAL JOURNAL OF LEGAL MEDICINE
Volume 124, Issue 6, Pages 623-630Publisher
SPRINGER
DOI: 10.1007/s00414-010-0511-z
Keywords
Ethyl glucuronide (EtG); Ethyl sulfate (EtS); Urine; Abstinence; Alcohol; Food; LC/MS
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Urine testing for ethyl glucuronide (EtG) is used to spot recent alcohol intake and is utilized to document alcohol abstinence. However, other possible sources of ethanol existed when special beverages or foods were ingested. EtG concentration curves in urine were measured after the consumption of non-alcoholic beers, fruit juices, sauerkraut, and matured bananas. Using a cutoff of 0.1 mg/l, positive EtG findings were revealed after the ingestion of a lot of non-alcoholic beer up to 13 h later, sauerkraut up to 5 h later, and matured bananas up to 3.5 h later. In German abstinence programs, subjects have to deliver a urine sample within 24 h after advice, and all participants are informed about possible misleading results caused by the consumption of certain beverages or foods. With respect to the present results, a 0.1 mg/l cutoff can be considered useful, and misleading results should not be expected from informed subjects within a 24-h waiting period.
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