Alcohol urine tests can detect alcohol or alcohol byproducts in your urine for 12 to 24 hours or more (up to 72 hours) with heavier alcohol use. Various factors contribute to the test results ...

Alcohol can be detected in a urine test for up to 24 hours. After heavy alcohol consumption, the urine will likely test positive for alcohol for 72 hours or more, depending on how much was consumed.