What is an ETG Test?
The ETG (Ethyl Glucuronide) test is a type of urine test that detects alcohol use for a longer period compared to blood or breath tests. Instead of measuring alcohol directly, it looks for ETG, a byproduct created when the liver breaks down alcohol. This makes it highly accurate, even for small amounts of alcohol.
How Does the ETG Test Work?
- Alcohol enters the body and is processed by the liver.
- During this process, ETG is formed.
- ETG stays in urine for several days.
- A urine test checks for the presence of ETG.
This is why the ETG test can confirm alcohol use even when the person is no longer drunk.
How Long Can the ETG Test Detect Alcohol?
The detection window depends on how much alcohol is consumed:
- Light drinking: 24–48 hours
- Moderate drinking: 48–72 hours
- Heavy drinking: Up to 80 hours
Factors like age, weight, hydration, metabolism, and drink.
Why is the ETG Test Important?
ETG testing is commonly used for:
- Workplace testing – To maintain safety standards.
- Legal cases – For probation, custody, or court-ordered monitoring.
- Rehabilitation centers – To track sobriety and progress.
Can You Beat an ETG Test?
Many people try to “cheat” the test, but it’s very difficult:
- Drinking lots of water may dilute urine, but labs can detect dilution.
- Detox products and quick fixes rarely work.
- Even small exposure (like from mouthwash) can sometimes cause a positive result.
The only reliable way to pass is to avoid alcohol.
ETG Test vs Blood Test
| Feature | Blood Test | ETG Test |
|---|---|---|
| What it detects | Alcohol in blood | ETG (alcohol byproduct) |
| Detection time | Up to 12 hours | 24–80 hours |
| Accuracy | Good for current use | Very sensitive |
| Best for | DUI, hospital checks | Probation, workplace, rehab |
ETG Test Calculator
If you want to know how long alcohol stays in your system, try using our free ETG Calculator. It gives you an estimate based on your drinking patterns.
ETG Test – FAQs
Q1. How accurate is an ETG test?
Very accurate – it detects alcohol use even days later.
Q2. Can one drink show up on the ETG test?
Yes, even one drink can result in a positive test.
Q3. How long can alcohol be detected in urine?
Up to 80 hours, depending on drinking habits.
Q4. Can water help pass the test?
No. It may dilute urine but doesn’t remove ETG.
Q5. What’s the best way to pass?
The only safe way is to avoid alcohol completely.
Final Thoughts
The ETG test is one of the most reliable ways to detect alcohol use. It’s widely used for workplace safety, legal monitoring, and recovery programs.
Want to check how long alcohol stays in your system? Use our free ETG Calculator.