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blood alcohol concentration

   Also found in: Medical, Legal, Acronyms, Encyclopedia, Wikipedia 0.01 sec.
blood alcohol concentration
n. Abbr. BAC
The concentration of alcohol in the blood, expressed as the weight of alcohol in a fixed volume of blood and used as a measure of the degree of intoxication in an individual. The concentration depends on body weight, the quantity and rate of alcohol ingestion, and the rates of alcohol absorption and metabolism. Also called blood alcohol level.


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Blood alcohol concentration is the amount of alcohol present in a 100 milliliter (ml) volume of blood.
In most people reliable signs of intoxication are present by casual observation at a blood alcohol concentration (BAC) of 150 mg/dl or more, even in most tolerant individuals.
An increasing number of municipalities are implementing ignition interlock as a penalty for first offenders with low blood alcohol concentrations (BAC), and the technology may soon become standard equipment in all automobiles, regardless of whether the driver has had previous drunk driving offenses.
 
 
 
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