# Forensic DNA elimination databases in Europe: A comparative analysis of data from seven countries

## TL;DR

This study compares forensic DNA elimination databases across seven European countries to identify differences in design and management, emphasizing the need for standardized practices.

## Contribution

The study provides a comparative analysis of forensic DNA elimination databases in seven European countries, revealing variability and suggesting harmonization.

## Key findings

- Significant differences exist in database sizes, legal frameworks, and operational practices across countries.
- Czechia, Poland, and Sweden demonstrate robust practices that could serve as models.
- Harmonized European frameworks are needed to improve transparency and efficiency in forensic DNA practices.

## Abstract

Forensic DNA elimination databases are valuable tools for identifying potential contamination risks during forensic investigations. This study provides a comparative analysis of the design, implementation, and effectiveness of forensic DNA elimination databases across seven European countries: Sweden, Germany, Czechia, Poland, the Netherlands, the UK, and Finland. Data were collected through structured inquiries sent to ENFSI member states’ forensic DNA laboratories, focusing on key aspects such as legal frameworks, database sizes, and contamination cases identified through the elimination database. The results reveal significant differences in the establishment and management of these databases, reflecting diverse legal and operational contexts. The findings underscore the need to ensure that all European countries implement their elimination databases to standardize forensic procedures and improve the reliability of DNA evidence. Furthermore, the study highlights the importance of introducing harmonized frameworks for forensic DNA elimination databases to enhance transparency, accessibility, and efficiency in forensic DNA practices across Europe.

•A comparative analysis of forensic DNA elimination databases was conducted in seven EU countries.•Significant variability was observed in database sizes, legal frameworks, and operational practices.•Robust practices in Czechia, Poland, and Sweden could serve as potential models for other nations.•Highlights the need for harmonized European frameworks for database management.

A comparative analysis of forensic DNA elimination databases was conducted in seven EU countries.

Significant variability was observed in database sizes, legal frameworks, and operational practices.

Robust practices in Czechia, Poland, and Sweden could serve as potential models for other nations.

Highlights the need for harmonized European frameworks for database management.