One urine test that has come into popular use is the EtG (ethyl glucuronide) test, which can determine recent alcohol consumption even if no measurable alcohol is present in the system.
EtG testing is typically used to evaluate and monitor whether an individual is abstaining from the consumption of alcohol. Our EtG testing protocol uses an immunoassay screen with LC/MS/MS confirmation of any presumptive positives. Our confirmatory testing is performed in conjunction with EtS testing. This process maximizes the benefits of both the sensitivity of EtG testing and the stability of EtS as a separate long-term ethanol metabolite.
An EtG-I cutoff of 100 ng/mL is most likely to detect heavy drinking for up to five days and any drinking during the previous two days. Cutoffs of ≥ 500 ng/mL are likely to only detect heavy drinking during the previous day.
