Estimated Blood Alcohol Concentration - EBAC
Blood alcohol content (BAC), also called blood alcohol concentration, blood ethanol concentration, or blood alcohol level is most commonly used as a metric of alcohol intoxication for legal or medical purposes.
Blood alcohol content is usually expressed as a percentage of alcohol (generally in the sense of ethanol) in the blood in units of mass of alcohol per volume of blood or mass of alcohol per mass of blood, depending on the country. For instance, in North America a BAC of 0.10 (0.10% or one tenth of one percent) means that there are 0.10 g of alcohol for every dL of blood.
To calculate estimated peak blood alcohol concentration (EBAC), a variation, including drinking period in hours, of the Widmark formula is used.
The factor 1.2 is used to convert the amount in grams to Swedish standards set by The Swedish National Institute of Public Health
|EBAC||estimated blood alcohol concentration(in g/100ml) (dimensionless)|
|BWb||constant for body water in the blood(mean 0.806) (dimensionless)|
|SD||number of standard drinks (10 g ethanol per drink) (dimensionless)|
|BW||body water constant (0.58 for males, 0.49 for females) (dimensionless)|
|Wt||body weight (Kg) (dimensionless)|
|MR||metabolism rate (males:mean,0.018,range,0.0102-0.0253-females:mean,0.017,range,0.014-0.021) (dimensionless)|
|DP||drinking period (h) (dimensionless)|