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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 ...
The ratio of venous blood alcohol content to breath alcohol content may vary significantly, from 1300:1 to 3100:1. Assuming a blood-alcohol concentration of 0.07%, for example, a person could have a partition ratio of 1500:1 and a breath test reading of 0.10 g/2100 mL, over the legal limit in some jurisdictions. [17]
Different countries have different baselines for blood alcohol levels when identifying intoxication through breathalyzers. In the United States it is 0.08 g/dL. [citation needed] In diagnosing ABS through serum measurement methods, patients must fast in order that baseline blood alcohol and blood glucose levels can be established.
In contrast, only 16 percent of those involved in fatal wrecks have BAC levels under 0.08 (and the number is even lower for those specifically in the .05 to .07 range who would presumably be ...
The laws of driving under the influence vary between countries. One difference is the acceptable limit of blood alcohol content.For example, the legal BAC for driving in Bahrain is 0, despite drinking alcohol being allowed, in practice meaning that any alcohol level beyond the limit of detection will result in penalties.
At relatively low alc/vol, the alcohol percentage by weight is about 4/5 of the alc/vol (e.g., 3.2% ABW is about 4% alc/vol). [25] However, because of the miscibility of alcohol and water, the conversion factor is not constant but rather depends upon the concentration of alcohol. [citation needed]
In jurisdictions in the U.S., maximum blood alcohol levels for legal driving are about 17 to 22 mM. [ 67 ] [ 68 ] In the upper range of recreational ethanol concentrations of 20 to 50 mM, depression of the central nervous system is more marked, with effects including complete drunkenness, profound sedation, amnesia, emesis, hypnosis, and ...
Based on combined data in the US from SAMHSA's 2004–2005 National Surveys on Drug Use & Health, the rate of past-year alcohol dependence or misuse among persons aged 12 or older varied by level of alcohol use: 44.7% of past month heavy drinkers, 18.5% binge drinkers, 3.8% past month non-binge drinkers, and 1.3% of those who did not drink ...