EtG – Calculator -Alcohol Screening Testing – 80 Hour Rule

Some labs now use a testing method known as “EtG” for discovering how long ago someone metabolized alcohol.  This test detects the presence of ethyl glucuronide in the urine. It is a direct metabolite the body uses to process alcohol. Its existence in urine detects alcohol consumption in the past 80 hours (approximately).

There is a renewed interest in testing hair instead of urine, and this can increase the timeframe of detection, but it is still not used. Previously, testing hair had been fraught with problems, inaccuracies, and even lawsuits. However, urine has high sensitivity and specificity in detecting alcohol misuse in various settings, especially where abstinence is essential, such as alcohol treatment programs. In addition, this type of test can be positive for 3 to 4 days, even after low to moderate drinking.

Ethyl Glucuronide is a biomarker that determines whether the body has metabolized any alcohol recently. For example, it tests for the presence of a related chemical, ethyl glucuronide, in the urine. In that case, the results determine if someone drank alcohol within approximately the past 80 to 90 hours.

EtG has become known as the “80-hour test” for detecting any amount of consumed ethyl alcohol recently. It has emerged as the test of choice for alcohol due to the technology’s accuracy and is now routinely available. In addition, it detects current alcohol consumption, even after ethanol is no longer measurable using other methods. Therefore, the appearance of it in urine is a definitive indicator of consuming alcohol recently.

Most people are looking for the answer to: “how long after I stopped will I be able to pass a drug screening test.” The answer depends on whether the test is a standard or not. More and more testing clinics are running this type of test.

The disadvantage of this testing is that it can be detected at low levels and be positive after exposure to alcohol from non-beverage sources or incidental exposures, which can lead to false positives. These exposures can include mouthwash, foods, or over-the-counter medications.

There is a renewed interest in testing hair instead of urine, and this can increase the timeframe of detection, but it is still not used. Previously, testing hair had been fraught with problems, inaccuracies, and even lawsuits. However, urine has high sensitivity and specificity in detecting alcohol misuse in various settings, especially where abstinence is essential, such as alcohol treatment programs.

Quick EtG Calculator

Select the day the person stopped drinking

Select the time the person stopped drinking

This person is at high risk to fail an EtG test until at least: