You drink 1 oz of alcohol is it out 24hrs?

No, it is not out of your system after 24 hours. The amount of time it takes for alcohol to leave your body depends on various factors, including your age, weight, sex, metabolism, and how much you have drunk. The average adult body can process approximately one standard drink (containing about 0.6 ounces of pure alcohol) per hour. Therefore, it could take several hours to a full day for one ounce of alcohol to be completely eliminated from your system.