Evidence map›Paper›PMID 42120005›Full record

ArticleDrug testing and analysis2026

Determination of THC and THC-COOH in Dried Capillary Blood Spots and Comparison to Venous Blood of Recreational Cannabis Consumers in a Pilot Study.

Matthias Bantle, Willi Schirmer, Joel Bruegger, Thomas Wüthrich, Andreas Längin, Lena Zwicker, Reto Auer, Wolfgang Weinmann

Abstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Drug testing and analysis, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

8 authors.

Matthias BantleInstitute of Forensic Medicine, Forensic Toxicology and Chemistry, University of Bern, Bern, Switzerland.ORCID https://orcid.org/0000-0001-9210-2802
Willi SchirmerInstitute of Forensic Medicine, Forensic Toxicology and Chemistry, University of Bern, Bern, Switzerland.ORCID https://orcid.org/0009-0004-5579-2217
Joel BrueggerInstitute of Forensic Medicine, Forensic Toxicology and Chemistry, University of Bern, Bern, Switzerland.ORCID https://orcid.org/0009-0009-7199-4528
Thomas WüthrichInstitute of Forensic Medicine, Forensic Toxicology and Chemistry, University of Bern, Bern, Switzerland.
Andreas LänginInstitute of Forensic Medicine, Forensic Toxicology and Chemistry, University of Bern, Bern, Switzerland.
Lena ZwickerInstitute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland.ORCID https://orcid.org/0000-0003-2775-9239
Reto AuerInstitute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland.ORCID https://orcid.org/0000-0003-4222-4849
Wolfgang WeinmannInstitute of Forensic Medicine, Forensic Toxicology and Chemistry, University of Bern, Bern, Switzerland.ORCID https://orcid.org/0000-0001-8659-1304

Funding

City of BernIRM, University of BernSwiss National Science Foundation PLS 32003B_214832Swiss Tobacco Prevention Fund TPF 326.5-2/60
6 · The paper itself

Abstract

With increased sensitivity of instrumentation, more substances can be analysed using capillary dried blood spots (DBS), and therefore, minimal invasive sample collection can be performed. However, for cannabinoids such as (-)-trans-Δ

Indexed as

Dried Blood Spot TestingDronabinolSubstance Abuse DetectionCapillariesChromatography, LiquidHumansLimit of DetectionLiquid Chromatography-Mass SpectrometryPilot ProjectsTandem Mass SpectrometryVeins11-nor-delta(9)-tetrahydrocannabinol-9-carboxylic acidDronabinol

Identifiers

PMID42120005
PMCPMC13327133

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.