Precision of estimating the time since death by vitreous potassium-Comparison of 5 different equations.

Forensic Sci Int

Institute of Forensic Medicine, University of Bonn, Stiftsplatz 12, D-53111 Bonn, Germany. Electronic address:

Published: December 2016

The precision of death time estimation by vitreous potassium using 5 different formulas is compared on a random sample of 600 cases. Mean differences, standard deviations and 95% limits of confidence between real and extrapolated time since death were calculated. The best results were obtained using equations with "mean" slopes of about 0,17 or 0,19mmol/l per hour. Equations with a steeper or flatter slope reveal already great mean deviations between real and extrapolated time since death and do not allow a reliable death time estimation.

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http://dx.doi.org/10.1016/j.forsciint.2016.10.005DOI Listing

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