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According to research, for an ounce of alcohol, it will take the liver one-hour to metabolized. For normal people, one ounce of alcohol will produce a .015 blood-alcohol concentration. So the time alcohol stays in your system will be directly proportional to the amount of alcohol you take. How Long Does Alcohol Stay in Your Urine?
How Long Does Alcohol Stay In Your System? Once in the bloodstream, alcohol leaves the system in two ways: 10% leaves through breath, perspiration, and the urine. 90% is metabolized (broken down in the body). Pretty much everyone, regardless of age, size, or race, metabolizes alcohol at the same pace. That pace is .015 of blood alcohol concentration (BAC) per hour. So that means for every hour you are not drinking, .015 of the alcohol in your body is being metabolized and disappearing from your body (thanks to David J. Hanson, Ph.D. for this information). So, if your BAC was 0.08 (legally impaired), it would take about 5.33 hours for the alcohol to be eliminated from your body.