Alcohol can be detected in urine for up to 72 hours after heavy use. Ethyl glucuronide (EtG) tests can show alcohol use up to 80 hours later. Exposure to products like mouthwash can affect test ...

One patient had multiple false positive toxicology tests after taking a popular diabetes drug. Despite not ingesting alcohol for over 10 months, a man in his early 60s tested positive for ethanol in ...