Chemistry Section

Controlled Substance Evidence Submission Guidelines, Rev. 08/2022

Controlled Substance Reference 

As of July 17, 2017 the DFS will permit law enforcement officers to perform their own field tests at the DFS.  For more information please see this announcement.

Toxicology Evidence Submission Guidelines, Rev.04/2023

As of May 01, 2019 the DFS has issued a guidance letter that is specific to Toxicology Evidence Submissions.  For more information please see this announcement. 

Trace Evidence Submission Guidelines, Rev. 05/2021

Criminalistics Section

Firearms and Toolmarks Evidence Submission Guidelines, Rev. 02/2020

Forensic Imaging Evidence Submission Guidelines, Rev. 01/2022

Latent Print Evidence Submission Guidelines, Rev. 02/2019

Latent Print Reference

Electronic Digital Evidence Submission Instructions, Rev. 2/2022

DNA Section

DNA Evidence Submission Guidelines, Rev. 04/2023

DNA Analysis Reference

Sexual Assault Kit Evidence Submission Guidelines, Rev. 04/2022

Evidence Handbook

The DFS has published the 10th Edition of the Evidence Handbook. 

Contact Information 

Please direct any questions about the Evidence Submission Guidelines to the Forensic Case Manager, Kathy Mahnke, via email at  or cell phone 608.609.6125.