Guidance

Y-STR profiling (FSR-GUI-0013)

Guidance for Y-STR analysis delivered into the criminal justice system in England and Wales.

• From: Forensic Science Regulator
• Published: 26 March 2021
• Last updated: 6 March 2025 — See all updates

Documents

Y-STR profiling (accessible)

Ref: FSR-GUI-0013

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Y-STR profiling

Ref: FSR-GUI-0013

PDF, 709 KB, 34 pages

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Details

This document provides guidance for Y-STR analysis delivered into the criminal justice system in England and Wales as it applies to profile comparison and kinship testing. It does not apply to ancestry testing.

You can view the previous version of this guidance on the National Archives.

Published 26 March 2021

Last updated 6 March 2025 + show all updates

1. 6 March 2025

   Published issue 2 of the Y-STR profiling document.

2. 21 January 2025

   Added a link to the previous version of this guidance.

3. 25 August 2023

   Guidance updated with changes to formatting, structure and naming system, in line with requirements under the Forensic Science Act 2021. Accessible version of guidance added.

4. 26 March 2021

   First published.