Detect alcohol use: Ethyl glucuronide and ethyl sulfate are metabolites of alcohol that can persist for several days rather than only several hours, as the actual blood alcohol concentration (BAC) does. It can detect drinking in as much as a 72 hour window. So, an individual who is not supposed to be drinking may have zero BAC, but an EtG of several hundred to several thousand if they drank the day before.
Answered 1/27/2016
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