Guidance

DNA mixture interpretation (FSR-G-222)

This guidance sets out the approach for the interpretation of DNA mixture profiles.

• From: Forensic Science Regulator
• Published: 31 July 2018
• Last updated: 22 July 2024 — See all updates

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DNA mixture interpretation (accessible)

Ref: FSR-G-222

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DNA mixture interpretation

Ref: FSR-G-222

PDF, 525 KB, 64 pages

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Details

The document includes:

• standardised terminology to be used
• the acceptable boundaries for the interpretation of complex DNA mixture profiles
• the interpretation of a variable number of contributors to a DNA mixture profile
• the use and limitations of a qualitative opinion where no quantitative measure can be calculated
• guidance for the interpretation content for reports and statements

Issue 2 of this document updates:

• the position for guideline 16
• the qualitative evaluation of the strength of evidence, and the major and minor approach - discussed in the ISFG’s DNA commission of the international society for forensic genetics: Assessing the value of forensic biological evidence

Published 31 July 2018

Last updated 22 July 2024 + show all updates

1. 22 July 2024

   Added accessible version.

2. 22 September 2020

   Updated guidance and improved accessibility of PDF.

3. 31 October 2018

   DNA mixture interpretation, FSR-G-222: Issue 2 added.

4. 29 October 2018

   Issue 2 of the DNA mixture interpretation, FSR-G-222 added.

5. 20 September 2018

   Guidance updated.

6. 31 July 2018

   First published.