Interpretation of breathalyser results for medico legal purposes

Experiments were conducted involving 20 subjects drinking 284 ml. Glasses of beer (4.9% Ethanol by volume) on an empty stomach for one hour, and 42 subjects drinking 284 ml glasses of beer several hours after a light breakfast at their own rate for three hours. A BAC was taken by blood analysis immediately drinking ceased, and breath samples taken until the BAC reached a maximum. In the one hour experiment the number of glasses consumed varied from 7 to 15. The BAC increase per glass was calculated (after deducting one glass to compensate for elimination occurring during the drinking period) as from 0.009 gms/100 ml to 0.02 gms/100 ml for each glass, with a mean of 0.013 gms/100 ml for each glass. In the three hour experiment the number of glasses consumed varied from 10 to 26. The BAC increase per glass (after deducting three glasses from each total) ranged from 0.009 gms/100 ml per glass to 0.019 gms/100 ml, again with mean of 0.013 gms/100 ml. The time taken to reach maximum BAC after cessation of drinking varied from 25 minutes to 85 minutes, with a mean of 60 minutes, in the one hour study, and from 15 minutes to 80 minutes with a mean of 43 minutes in the 3 hour study.


  • English

Media Info

  • Pagination: 206-10

Subject/Index Terms

Filing Info

  • Accession Number: 01440535
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 0642013977
  • Files: ATRI
  • Created Date: Aug 24 2012 11:01PM