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Blood alcohol content
| Blood alcohol content | |
|---|---|
 | |
| Synonyms | Blood alcohol concentration, blood ethanol concentration, blood alcohol level, blood alcohol |
| LOINC | 5639-0, 5640-8, 15120-9, 56478-1 |
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.[1]
BAC is expressed as mass of alcohol per volume of blood. In US and many international publications, BAC levels are written as a percentage such as 0.08%, i.e. there is 0.8 grams of alcohol per liter of blood.[1][2] In different countries, the maximum permitted BAC when driving ranges from the limit of detection (zero tolerance) to 0.08% (0.8 g/L).[3][2] BAC levels above 0.40% (4 g/L) can be potentially fatal.[1]
According to Guinness World Records, 1.374% (13.74 g/L) is the highest BAC ever recorded in a human who survived the ordeal.[4] The record was set in July 2013 by an unidentified Polish man found unconscious by the side of a road in the village of Tarnowska Wola, in south-east Poland. First responders reportedly did not believe the initial BAC readings taken at the scene, possibly due to it being almost 69 times greater than the Polish legal limit of 0.02% (0.2 g/L). However, the reading was later confirmed after the man was transported to a nearby hospital.[4]
- ^ a b c "Blood Alcohol Level". MedlinePlus. National Library of Medicine. 3 December 2020.
- ^ a b "Legal BAC limits by country". World Health Organization. Retrieved 12 November 2023.
- ^ "Drink-drivers in Nepal face the 'smell test' crackdown". Yahoo News. 22 July 2012.
- ^ a b "Highest blood alcohol level". Guinness World Records. Archived from the original on 7 December 2024. Retrieved 6 December 2024.
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