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PhD Student, School of Population and Public Health, University of British Columbia

Samuel Tobias is a PhD student in the University of British Columbia's School of Population and Public Health and a graduate research assistant with the BC Centre on Substance Use. He is an experienced drug checking technician who, in his role as Research Data Coordinator for the BC Centre on Substance Use's Drug Checking Project, oversaw the collection and reporting of the province's drug checking data. Samuel has been educating drug checking technicians in BC since 2018 and developed the provincial drug checking technical training curriculum. Samuel is interested in how the drug supply changes over time and what those changes mean for people's health.


  • 2022–present
    Graduate Research Assistant, BC Centre on Substance Use
  • 2018–2022
    Research Data Coordinator, BC Centre on Substance Use


    University of British Columbia, Doctor of Philosophy
  • 2016 
    University College London, Master of Science
  • 2015 
    University of Western Ontario, Bachelor of Science (Hons.)


  • 2022
    Time-series Analysis of Fentanyl Concentration in the Unregulated Opioid Drug Supply in a Canadian Setting, American Journal of Epidemiology
  • 2020
    Xylazine Identified in the Unregulated Drug Supply in British Columbia, Canada, Canadian Journal of Addiction
  • 2020
    Drug Checking Identifies Counterfeit Alprazolam Tablets, Drug and Alcohol Dependence

Professional Memberships

  • Society for Epidemiologic Research