Ethylglucuronide (EtG) is produced in the liver and is a direct metabolite of the alcohol consumed. It is progressively eliminated in urine and depending on the amount of alcohol taken ethylglucuronide can be detected for 12-48 hrs. EtG in urine is a short-term marker of alcohol consumption and can be used to demonstrate abstinence during the last 1 to 2 days. All food which contains alcohol (chocolate candy, kefir, fermented juices and alcohol-free beer) can potentially contribute to form EtG and should be avoided during the abstinence period.
We are authorized to test for MPA (Medical and psychological rehabilitation programme to regain the lost driving licence) in Germany. In monitoring abstinence for MPA at least 6 EtG tests in urine are requested over a 12 months period. Urine collection has to take place within 24 h of short notice and occurs under supervision to rule out adulteration. If all urine tests for EtG are negative abstinence for the whole period can be assumed.