If I drink the same amount each time, will my BAC be the same?
Your BAC won't necessarily be the same if you drink the same amount each time.
Various factors can affect your BAC such as height, weight, food consumed, metabolism, etc. Since these factors can vary day to day or even moment to moment, your BAC can be different even if you drank the same amount you have before.
Please click the link below for more information on what can affect your BAC.