Blood Alcohol Content (BAC) is a measure of the amount of alcohol in a person’s bloodstream. It is expressed as a percentage and is calculated by dividing the mass of alcohol in the blood by the total volume of blood in the body. BAC levels can be measured through a breathalyzer test, which measures the amount of alcohol on an individual’s breath, or through a blood test that detects the level of alcohol in an individual’s bloodstream.
The legal limit for BAC varies from state to state, but it typically ranges from 0.08% to 0.10%. People who have a BAC above this level are considered legally intoxicated and may face criminal charges if they are caught driving while under the influence. It is important to note that even small amounts of alcohol can impair judgment and coordination, so it is always best to avoid drinking and driving altogether.