Free EtG Calculator Online
Estimate alcohol Ethyl Glucuronide (EtG) detection windows and clearance times.
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Frequently Asked Questions (FAQ)
What is an EtG test?
An EtG (Ethyl Glucuronide) test is a biomarker test used to detect recent alcohol consumption in urine, even after ethanol itself is no longer measurable in the blood.
What is the detection window for EtG?
While commonly referred to as the '80-hour test', the practical detection window is usually 24 to 48 hours for moderate drinking, extending to 72-80 hours only after extreme heavy consumption.
What is the standard threshold for a positive test?
Typical thresholds are 500 ng/mL (highly specific for alcohol consumption) and 100 ng/mL (lower cutoff, potentially picking up accidental exposure from hand sanitizers or foods).
What is the half-life of EtG?
EtG has a half-life of approximately 2 to 3 hours in urine, meaning the concentration is cut in half every 2-3 hours after alcohol metabolism is complete.
Does the tool save my health logs?
No, all calculations occur client-side and remain entirely private.