The ratio of alcohol present in the blood to the total volume of blood, expressed as a percent.
The amount of alcohol in the blood at any time. A person with a blood alcohol concentration of 0.06- 0.9 generally is considered “impaired;” a person with a blood alcohol concentration of 1.0 or over generally is considered “intoxicated.” Legal concentrations vary from state to state.
The concentration of ethanol in the blood (weight of alcohol in a fixed volume of blood), usually expressed in the U.S. in mg/dl. Concentration depends on quantity, rate of alcohol ingestion, metabolism, and alcohol absorption rates, used to measure degree of intoxication in an individual. The alcohol level at which an individual is considered legally impaired varies by country and state. Also called blood alcohol level.
Blood alcohol concentration (BAC), or blood alcohol level (BAL), is the amount of alcohol in the blood and is expressed as a percentage. A recently passed federal law defined drunk driving as driving with a BAC of 0.08 percent or greater. All states must comply with this new standard by 2004.
The amount of alcohol in a person’s blood, expressed as a percentage.
A measure of the amount of alcohol in a person’s blood, stated as the number of milligrams of ethanol per 100 milliliters of blood.