ETG Half-Life Calculator
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 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
- 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.
Try related tools:
ETG Elimination Time Calculator | ETG 100ng Cutoff Calculator
FAQ: ETG Half-Life & Detection
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.
Can hydration speed up ETG elimination?
Proper hydration can help reduce concentration, but cannot drastically shorten detection time.
Last updated: October 2025 | Author: Saira Pansota