ETG Calculator - Know Your Detection Window

EtG (Ethyl Glucuronide) can typically be detected in urine for 24 to 80 hours after drinking, depending on the amount consumed, your metabolism, hydration levels, and other individual factors. Light drinking (1-2 drinks) may only be detectable for 24-48 hours, while heavy drinking (6+ drinks) can extend detection to 80+ hours or more.

Our calculator provides estimates based on published scientific research on ETG metabolism and half-life data. However, individual results can vary significantly due to factors like body weight, liver function, hydration, and genetic differences. Think of it as a helpful guide, not a guarantee. When stakes are high, err on the side of caution.

Common ETG cutoff levels are 500 ng/mL (standard), 100 ng/mL (low-level), and 50 ng/mL (research). Probation testing often uses the 500 ng/mL cutoff, but some programs use lower thresholds for stricter monitoring. Always check with your supervising officer or testing facility for your specific requirements.

It depends on how much you drank, the cutoff used, and individual metabolism. For light to moderate drinking (1-3 drinks), many estimates fall below the 500 ng/mL cutoff within 48 hours; heavier drinking can remain detectable longer. This calculator explains a model-based estimate, not a guaranteed result.

Key factors include: amount of alcohol consumed, time since last drink, body weight and composition, liver health and metabolism rate, hydration levels, age, and genetic factors. Women generally metabolize alcohol more slowly than men of similar weight. Chronic heavy drinkers may also have altered metabolism patterns.