What is the term used to describe the amount of alcohol present in the bloodstream?

The term used to describe the amount of alcohol present in the bloodstream is Blood Alcohol Concentration (BAC). This measurement represents the percentage of alcohol in a person's blood, indicating how much alcohol is consumed relative to the volume of blood. BAC is a critical factor in determining sobriety levels and is commonly used in legal contexts, particularly in relation to driving under the influence.

Understanding BAC is important because different levels reflect various legal implications and health risks. For example, a BAC of 0.08% is typically the legal limit for driving in many states, indicating that an individual may be impaired. Thus, BAC provides an objective method for assessing alcohol consumption and its effects on the body.