Chapter 2: Presumptive Testing

This chapter provides an overview of various presumptive methods in forensic science and includes: colourimetric, immunoassay, and in-field testing. Two cases from the Canadian Legal Information Institute (CanLII) highlight how the presumptive methods are used and reported on in the cases.

The podcast goes into detail about the two CanLII cases and describes the toxicants tested as well as the chemistry behind the presumptive tests used.


Interactive Presentation

Please use the navigation arrows located at the bottom centre of the presentation window to move through the 56 slides in this interactive presentation.

There are also 9 questions throughout the presentation, which you will receive immediate feedback on and can retry multiple times.

Slides: Module II Ch 2 Presumptive Testing



This podcast episode [12:38] goes through two cases that use presumptive testing methods for analysis of drugs and metabolites, and points to the utility and challenges associated with such non-confirmatory testing practices.

Click on the image below to open a new window and listen to this podcast episode on Spreaker!

presumptive testing podcast episode

Audio Transcript

Clicking the link below will open the audio transcript for this podcast episode in a new window. You will then have the option to download the pdf file if you choose to.

Chapter 2: Presumptive Testing – TRANSCRIPT


Icon for the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License

Forensic Toxicology by Dr. Sanela Martic is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

Share This Book