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Ontario Tech acknowledges the lands and people of the Mississaugas of Scugog Island First Nation.

We are thankful to be welcome on these lands in friendship. The lands we are situated on are covered by the Williams Treaties and are the traditional territory of the Mississaugas, a branch of the greater Anishinaabeg Nation, including Algonquin, Ojibway, Odawa and Pottawatomi. These lands remain home to many Indigenous nations and peoples.

We acknowledge this land out of respect for the Indigenous nations who have cared for Turtle Island, also called North America, from before the arrival of settler peoples until this day. Most importantly, we acknowledge that the history of these lands has been tainted by poor treatment and a lack of friendship with the First Nations who call them home.

This history is something we are all affected by because we are all treaty people in Canada. We all have a shared history to reflect on, and each of us is affected by this history in different ways. Our past defines our present, but if we move forward as friends and allies, then it does not have to define our future.

Learn more about Indigenous Education and Cultural Services

Theresa Stotesbury

Assistant Professor

Forensic Science

Faculty of Science

I am a forensic research scientist focusing on understanding the (bio)chemical properties of common types of physical evidences and traces deposited at crime scenes and how they persist in the environment.

Contact information

Science Building - Room 3055
North Oshawa
2000 Simcoe Street North
Oshawa, ON L1G 0C5

905.721.8668 ext. 3412

Research topics

  • Bloodstain formation
  • Bloodstain degradation
  • Time since deposition
  • Chemical profiles of trace evidence
  • Forensic blood substitutes

Areas of expertise

  • Forensic Chemistry
  • Bloodstain Pattern Analysis
  • High-speed Video
  • Films


Theresa Stotesbury is an assistant professor and early career researcher in the forensic science program in the Faculty of Science. Her research group characterizes how biological tissues, like blood, degrades in the environment and finds innovative ways to use this information to help with forensic investigations. For example, recently her research group was highlighted on the front cover of the journal Forensic Chemistry for mass spectrometry imaging of fingerprints that were chemically recovered from underneath bloodstains; the first study of its kind with significant implications for forensic investigations. Her group use methods in analytical chemistry to develop models to age a bloodstain, which can be useful in providing context to the events of a crime. Her research group also focuses on developing novel biomaterials for biosensing and forensic science applications.

Dr. Stotesbury has held a passion for forensic science since her earliest years as an academic, graduating with a BSc (Trent University) and MSc (University of Auckland) in Forensic Science. In 2017, she graduated with a PhD from Trent University in Materials Science, where she developed a synthetic blood substitute that forensic agencies around the world are now incorporating into their research and training practices. Dr. Stotesbury regularly collaborates with members of the forensic community and has held a previous appointment of Research Scientist at the Ontario Provincial Police.


  • BSc in Forensic Science Trent University 2011
  • MSc in Forensic Science University of Auckland 2012
  • PhD in Materials Science Trent University 2017

Courses taught

  • CHEM 3830U – Instrumental Analytical Chemistry
  • FSCI 3040U – Forensic Chemistry
  • FSCI 4030U - Drug Chemistry and Toxicology
  • FSCI 4430U - Directed Studies
  • MTSC 6010G - Physics and Chemistry of Materials