This ETG Half-Life Calculator helps estimate how long Ethyl Glucuronide (ETG) — a biomarker of alcohol use — stays detectable in the body. Enter your estimated ETG half-life and time since drinking to get an approximate remaining ETG percentage.
How to Use the ETG Half-Life Calculator
- Enter ETG half-life (default: 2.5 hours)
- Enter hours since last drink
- The result shows estimated % of ETG remaining in your system
About ETG Half-Life
The half-life of Ethyl Glucuronide (ETG) refers to the time it takes for half the ETG present in the body to be eliminated. Average ETG half-life values range between 2 to 3 hours, but can vary depending on metabolism, hydration, liver function, and amount of alcohol consumed.
Typical ETG Elimination Curve
| Hours After Drinking | Approx. ETG Remaining (%) |
|---|---|
| 6 hours | ~25% |
| 12 hours | ~6% |
| 24 hours | <1% |
Scientific References on ETG Half-Life
- US National Library of Medicine: Ethyl glucuronide as a marker of alcohol use
- NIH – Detection times of alcohol metabolites in urine
- Main ETG Calculator Tool
This calculator provides estimates for educational purposes only. Actual ETG detection can vary depending on test sensitivity and individual factors.
ETG Half-Life & Detection FAQs
How Long Is ETG Detectable in Urine?
Typically up to 48–72 hours after drinking stops, depending on cutoff sensitivity and drinking amount.
What Is the Average ETG Half-Life?
Between 2–3 hours, though metabolic rate and hydration can influence it.
Does Hydration Speed Up ETG Elimination?
Proper hydration can help reduce concentration, but cannot drastically shorten detection time.