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.

In the cross-sectional cohort, the semi-quantitative ACR had a sensitivity of 78.1% and a specificity of 93.3% at a 30 mg/g creatinine cutoff, with over 90% overall agreement with quantitative ACR ...