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Abklärung strittiger Identität von Blutalkoholproben mit DNA-Fingerprinting

Investigating the identity of disputed blood samples using DNA fingerprinting

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Summary

DNA fingerprinting is a perfect tool for investigating the identity of disputed blood by alcohol samples extracted. However, blood samples stored at an ambient temperature for longer periods can show considerable degradation of high-molecular DNA, diminishing the value of fingerprint investigation because of loss of the less frequent bands formed by the longer DNA fragments. Addition of the complexing agent EDTA can retard this degradation. Determination of the sex with DNA probes in the blood alcohol sample increases confidence in the investigation.

Zusammenfassung

Bestrittene Identität von Blutalkoholproben kann mit DNA-Fingerprinting zweifelsfrei geklärt werden. Die Aussagekraft kann aber vermindert sein in Fällen mit DNA-Degradation wegen Herumstehenlassens der Blutproben und/oder bei Postversand ohne Kühlung. Zusatz von EDTA verlangsamt generell solche Degradationserscheinungen. Die Geschlechtsbestimmung an Blutalkoholproben mit DNA-Sonden erhöht als einfache Zusatzuntersuchung das Vertrauen in die Abklärungsuntersuchung.

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Bär, W., Kratzer, A. Abklärung strittiger Identität von Blutalkoholproben mit DNA-Fingerprinting. Z Rechtsmed 102, 263–270 (1989). https://doi.org/10.1007/BF00201322

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  • DOI: https://doi.org/10.1007/BF00201322

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