Determining exactly how long alcohol is detectable in the body depends on many variables, including which kind of drug test is being used. Alcohol can be detected for a shorter time with some tests but can be visible for up to three months in other tests.
EtG, known as Ethyl Glucuronide, is a direct metabolite of alcohol. EtG alcohol testing screens for the presence of EtG in urine and hair. This may be used to determine recent ethanol ingestion, even after ethanol is no longer measurable in the body. EtG is only evident when ethanol is ingested and is not produced as a result of fermentation.