Urinary EtG Level & Clearance Time Estimator

This educational tool estimates urinary ethyl glucuronide (EtG) levels after drinking and predicts when EtG will fall below 500 ng/mL and 250 ng/mL. It uses published pharmacokinetic data (EtG is a minor alcohol metabolite) and a simple model. Results are estimates and can vary with hydration, kidney function, drinking pattern, and lab methods. Not for forensic, employment, or legal decisions.

Enter your info

Gender

Weight (lbs)

Alcohol consumed (standard drinks)

Hours since you finished drinking

Urine creatinine (optional, mg/dL)

One US standard drink ≈ 14 g ethanol. Examples: 12 oz beer (5%), 5 oz wine (12%), 1.5 oz 80‑proof liquor.

Results

Estimated current EtG

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Time to < 500 ng/mL

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Time to < 250 ng/mL

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Peak EtG (C_max)

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Model details

Assumes fraction of dose converted to EtG rises with dose (≈0.03% light → 0.12% heavy).
EtG half‑life ≈ 2.6 hours (first‑order elimination).
Peak occurs ~5–7 h after finishing, later for heavier doses.
Creatinine normalization adjusts for urine dilution if a value is entered.

How this works (plain language)

When you drink alcohol, your body turns a tiny fraction of it into EtG, which is spilled into urine. Heavier drinking makes more EtG and keeps it around longer. EtG typically peaks in the urine about 5–7 hours after you stop drinking, then it drops by about half every ~2.6 hours. This tool estimates how high your EtG likely got (the peak) and how fast it’s falling, then tells you when it should dip under common cutoffs (500 and 250 ng/mL).

Important: This is an estimate for education only. Real results vary based on hydration (dilute urine can lower the measured number), kidney function, exact drinking pattern, and the laboratory method. Do not use for legal, employment, or compliance decisions.