Evidence map›Paper›PMID 34997693›Full record

ArticleDrug testing and analysis2022

Adulteration of low-delta-9-tetrahydrocannabinol products with synthetic cannabinoids: Results from drug checking services.

Manuela Carla Monti, Jill Zeugin, Konrad Koch, Natasa Milenkovic, Eva Scheurer, Katja Mercer-Chalmers-Bender

Open access · hybridAbstract read
In one paragraph

Article in Drug testing and analysis, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
6.4field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 38 citations in OpenAlex.

  1. Interpol review of forensic drug chemistry, 2022-2025.Forensic science international. Synergy · 2026
    Review
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  16. Interpol Review of Drug Analysis 2019-2022.Forensic science international. Synergy · 2023
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Manuela Carla MontiInstitute of Forensic Medicine, Department of Biomedical Engineering, University of Basel, Basel, Switzerland.ORCID https://orcid.org/0000-0002-9959-398X
Jill ZeuginAddiction Support, Region Basel (Suchthilfe Region Basel), Basel, Switzerland.
Konrad KochInstitute of Forensic Medicine, Department of Biomedical Engineering, University of Basel, Basel, Switzerland.
Natasa MilenkovicAddiction Services (Abteilung Sucht), Health Department Kanton Basel-Stadt, Basel, Switzerland.
Eva ScheurerInstitute of Forensic Medicine, Department of Biomedical Engineering, University of Basel, Basel, Switzerland.
Katja Mercer-Chalmers-BenderInstitute of Forensic Medicine, Department of Biomedical Engineering, University of Basel, Basel, Switzerland.ORCID https://orcid.org/0000-0002-3843-9065
University of Basel · CHAddiction Switzerland · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Since late 2019, low-delta-9-tetrahydrocannabinol (THC) preparations adulterated with synthetic cannabinoids (SCs) have been frequently observed in Switzerland. The unawareness of users concerning the presence of SCs and the typically higher potency and toxicity of SCs, when compared with THC, can result in increased health risks. In Switzerland, low-THC (<1%) cannabis products, except hashish, are legal. These products can act as carrier materials for SCs. In this study, cannabis samples and user self-reports received through three drug checking services were collected and analysed, to gain deeper insight into this new phenomenon. Samples were collected from January 2020 to July 2021. Liquid chromatography coupled with high-resolution mass spectrometry was used for the qualitative screening and semi-quantification of SCs, while gas chromatography with flame ionization detector was applied for the quantification of THC and cannabidiol levels. Reported adverse effects were compared between users who consumed adulterated (SC-group) and non-adulterated (THC-group) products. Of a total 94 samples, 50% contained up to three different SCs. MDMB-4en-PINACA was most often detected. All adulterated cannabis flowers contained ≤1% THC. Adulterated hashish also typically presented low THC-levels (median: 0.8%). The SC-group was associated with higher numbers of adverse events (p = 0.041). Furthermore, psychologic (p = 0.0007) and cardiologic (p = 0.020) adverse effects were more profound in the SC-group than in the THC-group. Drug checking services enabled the timely detection and monitoring of new and potentially dangerous trends. Furthermore, due to user-reports, additional valuable information was gained on adverse events associated with the consumption of novel SCs.

Indexed as

CannabinoidsCannabisHallucinogensDronabinolGas Chromatography-Mass SpectrometryCannabinoidsDronabinolHallucinogensMDMB-4en-PINACAadverse effectsdrug checkinghigh-resolution mass spectrometrymarket monitoringsynthetic cannabinoids

Identifiers

PMID34997693
PMCPMC9305195
OpenAlexW4206577483

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.