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Updated: May 18, 2026

Color Spot Test As a Presumptive Tool for the Rapid Detection of Synthetic Cathinones
Published on: February 5, 2018
Antidote treatment for cyanide poisoning with hydroxocobalamin causes bright pink discolouration and
C Brunel1, C Widmer, M Augsburger
1University Center of Legal Medicine, Geneva-Lausanne, Rue Michel-Servet 1, 1211 Geneva, Rue de Bugnon 21, 1011 Lausanne, Switzerland.
Abstract:
Here we report the case of a 70-year-old woman who committed suicide by cyanide poisoning. During resuscitation cares, she underwent an antidote treatment by hydroxocobalamin. Postmortem investigations showed marked bright pink discolouration of organs and fluids, and a lethal cyanide blood concentration of 43 mg/L was detected by toxicological investigation. Discolouration of hypostasis and organs has widely been studied in forensic literature. In our case, we interpreted the unusual pink coloration as the result of the presence of hydroxocobalamin. This substance is a known antidote against cyanide poisoning, indicated because of its efficiency and poor adverse effects. However, its main drawback is to interfere with measurements of many routine biochemical parameters. We have tested the potential influence of this molecule in some routine postmortem investigations. The results are discussed.
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