A simple method of DNA extraction in solving difficult criminal cases
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Updated: Aug 18, 2026

Enhanced Genetic Analysis of Single Human Bioparticles Recovered by Simplified Micromanipulation from Forensic ‘Touch DNA’ Evidence
Published on: March 9, 2015
Izet Eminovic1, Jasenko Karamehić, Faris Gavrankapetanović
1Department for molecular pathology Tuzla, Policlinic for microbiology pathology immunology and molecular medicine, University Clinical Centre of Tuzla, Bosnia and Herzegovina.
Aim:
We examined combined use in house method and DNA IQ system (Promega) procedure for the extraction DNA from biological trace in order to help the solving some crime cases.
Method:
Simple and efficient method for extraction of the DNA from biological trace samples included the well washed trousers and the knife without any visual biological trails (from some one hard criminal case). In this method there were used: centrifuge, microwave oven, shaker, chelex, proteinase K, DNA IQ System (Promega).
Results:
The extraction of DNA could be done within 2.5 hours or over the night. The DNA prepared on this way was good quality and could be used for STR analysis.
Conclusions:
This combined, simple, and safe method could be used for extraction DNA from samples containing a minute amount of the biological trace.
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