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Previous heavy drinking (previous 1–3 days)





Recent light drinking (e.g., past 24 hours)





Recent intense “extraneous exposure” (within 24 hours or less)





A “very low” positive (100–500 ng/mL) may indicate:


● ● ●


Previous heavy drinking (1–3 days) Previous light drinking (12–36 hours) Recent “extraneous” exposure


In addition to the revised SAMHSA


Advisory, the NADCP has also been pro- moting the “best practices” for EtG and EtS monitoring which include:


● ● A drug court informed consent agreement


Recommended cutoff concentrations that generally negate the influence of


● ●


incidental alcohol exposure: EtG 500 ng/ml and EtS 100 ng/ml


Requiring confirmations of presumptively positive immunoassay EtG screening results


Promoting the inclusion of EtS testing in relapse monitoring, due to its superior stability compared to EtG Drug courts and probation departments


have historically monitored alcohol use through breathalyzers or urine ethanol screens, but there is limited data reported on the percentage of positive ethanol screens in relation to EtG tests. A recent study published in the Drug Court Review, Te Efficacy of En- hanced Alcohol Monitoring,10


provided some


insight into the benefits of EtG testing. Over an 18-month span, researchers collected data from 149 participants enrolled in an adult


www.datia.org


datia focus


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