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Blood Alcohol Stability in Postmortem Blood Samples

Sutlovic, Davorka BSc, PhD*†; Versic-Bratincevic, Maja BSc, PhD; Definis-Gojanovic, Marija MD, PhD*†

American Journal of Forensic Medicine & Pathology: March 2014 - Volume 35 - Issue 1 - p 55–58
doi: 10.1097/PAF.0000000000000077
Original Articles

Abstract: The effect of long-term storage on alcohol stability in postmortem blood samples was investigated. Seventy-nine blood samples were used in this study. For the first time, blood alcohol concentrations were measured within 1 to 4 days after being taken at the Laboratory of Forensic Toxicology. After storage (ranging from 191 to 468 days), each sample was reanalyzed for blood alcohol concentration, and results were compared with the original analysis.

Results showed good agreement between the experimental measurements. About 90% of the results lie within 95% limits, and 10% were outside. Despite these positive correlations, the results of some blood samples showed a high variation in ethanol concentration. Deviation in alcohol concentration between replicates of up to 10% (observed in 39% samples) is not acceptable as precise forensic evidence.

From the *Department of Pathology and Forensic Medicine, University Hospital Centre Split; and †Department Forensic Medicine, University of Split School of Medicine, Split, Croatia.

Manuscript received May 15, 2013; accepted October 27, 2013.

The authors report no conflicts of interest.

Reprints: Davorka Sutlovic, BSc, PhD, Department of Pathology and Forensic Medicine, University Hospital Centre Split, Spinciceva 1, 21 000 Split, Croatia. E-mail: dsutlov@kbsplit.hr.

© 2014 by Lippincott Williams & Wilkins.