Trial reportForensic science international2008
Excretion of Delta9-tetrahydrocannabinol in sweat.
Trial report in Forensic science international, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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.
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.
Who cites it
17 citing papers in PubMed, 57 citations in OpenAlex.
- Disposition of MDMA and metabolites in human sweat following controlled MDMA administration.Clinical chemistry · 2009Trial
- Non-Invasive Approaches for Cotinine Detection: Enhancing Accessibility in Tobacco Use Monitoring.Addiction & health · 2026Review
- Arrhythmias and cannabis use: A comprehensive overview.Heart rhythm O2 · 2025Review
- Alternative matrices in forensic toxicology: a critical review.Forensic toxicology · 2022Review
- Pharmacokinetics of Cannabis and Its Derivatives in Animals and Humans During Pregnancy and Breastfeeding.Frontiers in pharmacology · 2022Review
- Impact of 2 Weeks of Monitored Abstinence on Cognition in Adolescent and Young Adult Cannabis Users.Journal of the International Neuropsychological Society : JINS · 2020Article
- The state of clinical outcome assessments for cannabis use disorder clinical trials: A review and research agenda.Drug and alcohol dependence · 2020Review
- [Testing for cannabis and synthetic cannabinoids in human specimens].Bulletin de l'Academie nationale de medecine · 2020Review
- Measuring Within-Individual Cannabis Reduction in Clinical Trials: A Review of the Methodological Challenges.Current addiction reports · 2019Article
- Detection and mapping of illicit drugs and their metabolites in fingermarks by MALDI MS and compatibility with forensic techniques.Scientific reports · 2015Article
- Recent developments in sweat analysis and its applications.International journal of analytical chemistry · 2015Review
- Establishing legal limits for driving under the influence of marijuana.Injury epidemiology · 2014Review
- Cannabinoids in exhaled breath following controlled administration of smoked cannabis.Clinical chemistry · 2013Article
- Primary outcome indices in illicit drug dependence treatment research: systematic approach to selection and measurement of drug use end-points in clinical trials.Addiction (Abingdon, England) · 2012Article
- Simultaneous quantification of cannabinoids and metabolites in oral fluid by two-dimensional gas chromatography mass spectrometry.Journal of chromatography. A · 2010Article
- Monitoring pregnant women's illicit opiate and cocaine use with sweat testing.Therapeutic drug monitoring · 2010Article
- Development and validation of a solid-phase extraction gas chromatography-mass spectrometry method for the simultaneous quantification of methadone, heroin, cocaine and metabolites in sweat.Analytical and bioanalytical chemistry · 2008Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 5 institutions in 2 countries.
Funding
Abstract
Sweat testing is a noninvasive technique for monitoring drug exposure over a 7-day period in treatment, criminal justice, and employment settings. We evaluated Delta(9)-tetrahydrocannabinol (THC) excretion in 11 daily cannabis users after cessation of drug use. PharmChek sweat patches worn for 7 days were analyzed for THC by gas chromatography-mass spectrometry (GC/MS). The limit of quantification (LOQ) for the method was 0.4 ng THC/patch. Sweat patches worn the first week of continuously monitored abstinence had THC above the United States Substance Abuse Mental Health Services Administration's proposed cutoff concentration for federal workplace testing of 1 ng THC/patch. Mean+/-S.E.M. THC concentrations were 3.85+/-0.86 ng THC/patch. Eight of 11 subjects had negative patches the second week and one produced THC positive patches for 4 weeks of monitored abstinence. We also tested daily and weekly sweat patches from seven subjects who were administered oral doses of up to 14.8 mg THC/day for five consecutive days. In this oral THC administration study, no daily or weekly patches had THC above the LOQ; concurrent plasma THC concentrations were all less than 6.1 microg/L. In conclusion, using proposed federal cutoff concentrations, most daily cannabis users will have a positive sweat patch in the first week after ceasing drug use and a negative patch after subsequent weeks, although patches may remain positive for 4 weeks or more. Oral ingestion of up to 14.8 mg THC daily does not produce a THC positive sweat patch test.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.