Precision touch DNA sampling on plastic bag knots for improved profiling of packer and holder contributions.

In forensic DNA analysis, evidence sampling stands as a pivotal step setting the ground for the quality of the forensic profiling. The collection of touch DNA from objects, when guidelines are scarce or absent, is usually governed by ad hoc decisions based on the available case circumstances. In our laboratory, in the context of illicit drug-related crimes, similar objects are frequently encountered, offering an opportunity for the standardization of evidence treatment.

Allele frequencies and forensic parameters of 22 autosomal STR loci in a population of 983 individuals from Serbia and comparison with 24 other populations.

Background: Analysis of allele frequencies of short tandem repeat (STR) loci in ethnically diverse populations is essential for forensic reference database construction and studies on population genetics.

Aim: To analyse genetic polymorphisms of 22 autosomal STR loci in the Serbian population and to compare them with previously published data from some European and Turkish populations.

Subjects And Methods: The study was conducted among 983 unrelated individuals from Serbia.

Effect of incomplete sampling description in DNA reports on bloodstain pattern analysis and reconstruction of a crime scene.

DNA analysts in forensic laboratories are engaged in analysing and sampling bloodstains from bloodstained items. Detailed and precise descriptions of bloodstains on items of interest are very important for bloodstain pattern analysis (BPA). DNA and BPA reports were examined from forensic laboratories in Serbia ( = 88).