Evidence map›Paper›PMID 42461025›Full record

ArticleJournal of analytical toxicology2026

From blood to brain: postmortem brain concentrations and brain-blood ratios of chlorprothixene, clozapine, olanzapine, and quetiapine.

Mikayla Z van der Meer, Brian S Rasmussen, Michael Nedahl, Marie K K Nielsen

Abstract read
In one paragraph

Article in Journal of analytical toxicology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Article
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

4 authors.

Mikayla Z van der MeerFaculty of Health Sciences, Forensic Medicine, University of Copenhagen, Copenhagen, DK 2100, Denmark.ORCID 0009-0005-3987-6186
Brian S RasmussenFaculty of Health Sciences, Forensic Medicine, University of Copenhagen, Copenhagen, DK 2100, Denmark.ORCID 0000-0001-8048-3222
Michael NedahlFaculty of Health Sciences, Forensic Medicine, University of Copenhagen, Copenhagen, DK 2100, Denmark.ORCID 0000-0001-6337-5246
Marie K K NielsenFaculty of Health Sciences, Forensic Medicine, University of Copenhagen, Copenhagen, DK 2100, Denmark.ORCID 0000-0001-5159-8549

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Treatment with antipsychotics such as chlorprothixene, clozapine, olanzapine, and quetiapine can be associated with cardiovascular and metabolic risks and poisoning, making them highly relevant in toxicological investigations. Since antipsychotics primarily act within the central nervous system, brain tissue serves as an alternative or complementary matrix to femoral blood in toxicological analysis. This study aimed to retrospectively evaluate brain concentrations and brain-blood ratios across toxic and non-toxic levels in 466 postmortem cases involving chlorprothixene, clozapine, olanzapine, and/or quetiapine. Median concentrations in brain tissue across all cases were 0.20 mg/kg for chlorprothixene, 4.2 mg/kg for clozapine, 0.42 mg/kg for olanzapine, and 0.34 mg/kg for quetiapine. Corresponding brain-blood ratios remained stable across the examined concentration range with median ratios of 3.1 for chlorprothixene, 2.9 for clozapine, 2.6 for olanzapine, and 3.0 for quetiapine. The provided brain concentrations and ratios can support further toxicological evaluations of postmortem cases.

Indexed as

Antipsychotic AgentsForensic ToxicologyAutopsyAza CompoundsBenzodiazepinesBrain ChemistryClozapineHumansQuetiapine FumarateAntipsychotic AgentsAza CompoundsBenzodiazepinesClozapineQuetiapine Fumarate

Identifiers

PMID42461025
PMCPMC13437013

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Registered trials

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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.