Information for evidence collection, submission and case acceptance.

Handbook for the Investigator

The primary resource for information regarding collection and preservation of exhibits is the Handbook for the Investigator. This handbook also provides guidance with respect to routinely accepted case and item types.

Urgent Cases

A section manager can authorize an urgent examination based on the specific needs of the investigation. Contact the laboratory prior to submission or as soon as possible thereafter to provide your specific set of circumstances. The manager will then evaluate if there is a need for the laboratory to provide rapid response.

Biology Specific Information

Biological testing/analyses will fall under one of two service lines, High Volume or Violent Crime. Details regarding sample collection and case acceptance can be found in the following guides. Contact the Biology Section scientific advisors for more information.


Provides chemical analysis and physical comparisons of different types of materials and trace evidence. Chemical examinations are performed to identify a material and find the source of the material. Contact the Chemistry Section scientific advisors for more information.


Analyzes body tissues and fluids for the presence of drugs and alcohol. This is important in cases such as: coroner's death investigations, impaired driving, sexual assault, fire death and homicide.

General Case Submission Guidelines of the Firearms Unit

For testing of firearms, ammunition and other devices.

Evidence collection supplies – order form

Investigative agencies can order collection supplies from the CFS using this online form.

Evidence Submission

A guide to the process of submitting evidence to the Centre of Forensic Sciences.

Instructional Videos

Watch the video to learn how to deal with evidence.