EtG alcohol tests are designed to detect the presence of ethyl glucuronide, a metabolite of alcohol, in a person's system. These tests can identify alcohol consumption even days after drinking, making them helpful in monitoring sobriety in individuals recovering from alcohol dependence.

 

Unlike traditional breath or blood alcohol tests that measure current intoxication, EtG tests reflect past alcohol use, which can be particularly valuable in probation or treatment settings. The accuracy of EtG tests can be influenced by factors such as individual metabolism and hydration levels. However, they are not foolproof; certain products, such as hand sanitizers or alcohol-containing medications, may lead to false positives.