What is the difference between BAC (blood alcohol content) and BAL (blood alcohol level)?
Blood alcohol content (BAC) or blood alcohol concentration is the concentration of alcohol in blood. It is measured either as a percentage by mass, by mass per volume, or a combination. For example, a BAC of 0.02% can mean 2 grams of alcohol per 1000 grams of an individual’s blood, or it can mean 0.2 grams of alcohol per 100 millilitres of blood. I think that Blood alcohol content and Blood alcohol level are one and the same.