Question: how long does it take to have enough alcohol in your blood to measure?
Answer: Blood: Alcohol is eliminated from the bloodstream at about 0.015 per hour. Alcohol can show up in a blood test for up to 12 hours. Urine: Alcohol can be detected in urine for up 3 to 5 days via the ethyl glucuronide (EtG) test or 10 to 12 hours via the traditional method.