Tomas Villen

Stockholm, AB, Sweden

Last Updated: 09/26/2026

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Found 16 publications

Origin and Interpretation of Low Methamphetamine Levels Found in Amphetamine-Positive Urine Samples: Support for Methylation of Amphetamine as a Minor Metabolic Pathway.

Origin and Interpretation of Low Methamphetamine Levels Found in Amphetamine-Positive Urine Samples: Support for Methylation of Amphetamine as a Minor Metabolic Pathway.

Journal: Drug testing and analysis

Published: May 14, 2025

Prevalence of AAS-Positive Samples at Drug Abuse Laboratory Sweden Between 2014 and 2023 and Sub-Study of Dual Use of AAS and Narcotics.

Prevalence of AAS-Positive Samples at Drug Abuse Laboratory Sweden Between 2014 and 2023 and Sub-Study of Dual Use of AAS and Narcotics.

Journal: Drug testing and analysis

Published: March 25, 2025

Appearance of hexahydrocannabinols as recreational drugs and implications for cannabis drug testing - focus on HHC, HHC-P, HHC-O and HHC-H.

Appearance of hexahydrocannabinols as recreational drugs and implications for cannabis drug testing - focus on HHC, HHC-P, HHC-O and HHC-H.

Journal: Scandinavian journal of clinical and laboratory investigation

Published: April 15, 2024

Alternative routine for reporting chiral amphetamine test results in assessment of attention-deficit/hyperactivity disorder medication: experiences from 2013 to 2023.

Alternative routine for reporting chiral amphetamine test results in assessment of attention-deficit/hyperactivity disorder medication: experiences from 2013 to 2023.

Journal: Drug testing and analysis

Published: February 07, 2024

Detection of anabolic agents including selective androgen receptor modulators in samples outside of sport.

Detection of anabolic agents including selective androgen receptor modulators in samples outside of sport.

Journal: Drug testing and analysis

Published: June 21, 2023

Urine Drug Tests Indicate Higher Prevalence of Combined Alcohol and Cocaine Use Compared to Alcohol Together with Cannabis or Amphetamine-A Possible Link to Cocaethylene.

Urine Drug Tests Indicate Higher Prevalence of Combined Alcohol and Cocaine Use Compared to Alcohol Together with Cannabis or Amphetamine-A Possible Link to Cocaethylene.

Journal: Alcohol and alcoholism (Oxford, Oxfordshire)

Published: November 17, 2022

Increasing prevalence of illicit drug use among employees at Swedish workplaces over a 25-year period.

Increasing prevalence of illicit drug use among employees at Swedish workplaces over a 25-year period.

Journal: European journal of public health

Published: August 25, 2022

Drug use and drug trends in Sweden 2010-2020 - results from urine drug testing in the workplace

Drug use and drug trends in Sweden 2010-2020 - results from urine drug testing in the workplace

Journal: Lakartidningen

Published: September 13, 2021

Analytical and medico-legal problems linked to the presence of delta-8-tetrahydrocannabinol (delta-8-THC): Results from urine drug testing in Sweden.

Analytical and medico-legal problems linked to the presence of delta-8-tetrahydrocannabinol (delta-8-THC): Results from urine drug testing in Sweden.

Journal: Drug testing and analysis

Published: August 30, 2021

Harmonized measurement and reporting of chiral amphetamine in the follow-up of ADHD treatment

Harmonized measurement and reporting of chiral amphetamine in the follow-up of ADHD treatment

Journal: Lakartidningen

Published: October 27, 2020

Simplified laboratory analysis of ethylene glycol allows improved management of poisoning cases

Simplified laboratory analysis of ethylene glycol allows improved management of poisoning cases

Journal: Lakartidningen

Published: May 27, 2020

Detectability of fentanyl and designer fentanyls in urine by 3 commercial fentanyl immunoassays.

Detectability of fentanyl and designer fentanyls in urine by 3 commercial fentanyl immunoassays.

Journal: Drug testing and analysis

Published: January 29, 2018

Showing 1-12 of 16

Last Updated: 09/26/2026