Systematic review of deaths involving synthetic cannabinoids found no reliable toxic dose ranges
A systematic review of 34 published reports of deaths involving synthetic cannabinoid receptor agonists found that typical toxic dose ranges have not been identified, and cause of death often remained unclear even after thorough investigation.
Quick Facts
What This Study Found
No reliable toxic or lethal concentration ranges have been established for synthetic cannabinoids. Even after comprehensive post-mortem examination, toxicology, and circumstantial analysis, the cause and manner of death remained unclear in some cases.
Key Numbers
380 studies identified, 34 included. 8 case series and 26 case reports analyzed. Toxicological results must be interpreted with caution due to the absence of established toxic ranges.
How They Did This
Systematic literature search through January 2019 across multiple databases. Included death cases with toxicological confirmation of synthetic cannabinoids in blood or urine and at least an external examination. 34 manuscripts (8 case series, 26 case reports) were included.
Why This Research Matters
Synthetic cannabinoids are the largest group of new psychoactive substances in Europe, yet forensic pathologists and toxicologists still lack basic reference data for determining whether these substances caused a death.
The Bigger Picture
The inability to establish toxic dose ranges reflects both the rapid emergence of new synthetic cannabinoid compounds and their unpredictable pharmacology, making these substances uniquely challenging for forensic medicine.
What This Study Doesn't Tell Us
Limited to published case reports and series, which may not represent all deaths. Post-mortem redistribution can alter drug concentrations. Many cases involved polydrug use, complicating attribution.
Questions This Raises
- ?Will toxic ranges eventually be established as more data accumulates?
- ?How should medical examiners approach cases where synthetic cannabinoid involvement is uncertain?
Trust & Context
- Key Stat:
- No typical toxic dose ranges established for synthetic cannabinoids
- Evidence Grade:
- Moderate: systematic review methodology applied to inherently limited case report data.
- Study Age:
- Published in 2020 in Frontiers in Psychiatry.
- Original Title:
- Post-Mortem Toxicology: A Systematic Review of Death Cases Involving Synthetic Cannabinoid Receptor Agonists.
- Published In:
- Frontiers in psychiatry, 11, 464 (2020)
- Authors:
- Giorgetti, Arianna, Busardò, Francesco Paolo(2), Tittarelli, Roberta(2), Auwärter, Volker, Giorgetti, Raffaele
- Database ID:
- RTHC-02573
Evidence Hierarchy
Analyzes all available research on a topic using a structured method.
What do these levels mean? →Frequently Asked Questions
Why can't scientists determine lethal doses?
Synthetic cannabinoids are a rapidly changing class of drugs with hundreds of different compounds. Each has different potency, and post-mortem drug levels can change after death, making it very difficult to establish what concentration is lethal.
How do people die from synthetic cannabinoids?
The mechanisms vary and are often unclear. Reported causes include cardiac events, respiratory failure, and accidents while intoxicated. In many cases, even thorough investigation could not definitively determine whether the synthetic cannabinoid caused the death.
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Cite This Study
https://rethinkthc.com/research/RTHC-02573APA
Giorgetti, Arianna; Busardò, Francesco Paolo; Tittarelli, Roberta; Auwärter, Volker; Giorgetti, Raffaele. (2020). Post-Mortem Toxicology: A Systematic Review of Death Cases Involving Synthetic Cannabinoid Receptor Agonists.. Frontiers in psychiatry, 11, 464. https://doi.org/10.3389/fpsyt.2020.00464
MLA
Giorgetti, Arianna, et al. "Post-Mortem Toxicology: A Systematic Review of Death Cases Involving Synthetic Cannabinoid Receptor Agonists.." Frontiers in psychiatry, 2020. https://doi.org/10.3389/fpsyt.2020.00464
RethinkTHC
RethinkTHC Research Database. "Post-Mortem Toxicology: A Systematic Review of Death Cases I..." RTHC-02573. Retrieved from https://rethinkthc.com/research/giorgetti-2020-postmortem-toxicology-a-systematic
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.