Though not infallible, alcohol tests are a dependable way to determine whether someone has consumed alcohol in the past few months. An alcohol hair test can detect whether a person has consumed ...
Medically reviewed by Steffini Stalos, DO Key Takeaways 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.