Blood alcohol content
Blood alcohol content (BAC), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol intoxication used for legal or medical purposes; it is expressed as mass of alcohol per volume of blood. For example, a BAC of 0.10 (0.10% or one tenth of one percent) means that there is 0.10 g of alcohol for every 100 mL of blood. A BAC of 0.0 is sober. In different countries the maximum permitted BAC when driving ranges from the limit of detection to 0.08%. BAC levels over 0.08% are considered impaired; above 0.40% is potentially fatal.
| Blood alcohol content | |
|---|---|
| Synonyms | Blood alcohol concentration, blood ethanol concentration, blood alcohol level, blood alcohol |
| LOINC | 5639-0, 5640-8, 15120-9, 56478-1 |
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