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 September 2020 — See all updates

Documents

DNA mixture interpretation, 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 September 2020 + show all updates

1. 22 September 2020

   Updated guidance and improved accessibility of PDF.

2. 31 October 2018

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

3. 29 October 2018

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

4. 20 September 2018

   Guidance updated.

5. 31 July 2018

   First published.