Cookies on this website

We use cookies to ensure that we give you the best experience on our website. If you click 'Accept all cookies' we'll assume that you are happy to receive all cookies and you won't see this message again. If you click 'Reject all non-essential cookies' only necessary cookies providing core functionality such as security, network management, and accessibility will be enabled. Click 'Find out more' for information on how to change your cookie settings.

For medicolegal purposes, breath alcohol content is typically determined from an end-expiratory sample. Measurements obtained by this method necessarily underestimate the alveolar breath alcohol content, and therefore underestimate the blood alcohol content. We suggest and analyse an improved paradigm which uses the entire time-series of breath alcohol measurements during exhalation, not simply the last recorded value. We present two mathematical models for the exhaling lung, and discuss the implications of each for more accurate and therefore more reliable breath alcohol measurement.

Original publication




Journal article


Alcohol Alcohol

Publication Date





61 - 67


Adult, Alcoholic Intoxication, Automobile Driving, Breath Tests, Ethanol, Female, Humans, Male, Mathematical Computing, Metabolic Clearance Rate, Pulmonary Alveoli, Pulmonary Ventilation, Signal Processing, Computer-Assisted, Software