Cannabis Cigarettes Used for Doping: Delta-9-Tetrahydrocannabinol (THC) Urine Detection

May 6, 2008 updated by: Federal Office of Sports, Switzerland

Cannabis and Doping - Pharmacokinetics of Smoked Cannabis Under Controlled Clinical Conditions

The purpose of this study on volunteers is whether THC and short-living metabolites are suited to detect recent Cannabis smoking within urine doping control.

Study Overview

Status

Completed

Conditions

Detailed Description

About half of all positive doping cases in Switzerland have been related to Cannabis consumption (mainly recreational smoking). So far, the target analyte in urine is 11-nor-9-carboxy-THC (THC-COOH), the main metabolite of delta-9-tetrahydrocannabinol (THC), which is excreted up to several days after single use. However, the wide detection window of THC-COOH does not allow a conclusion concerning the impact on the physical performance. Therefore, the evaluation of other target analytes with shorter elimination half-lives is needed and the aim (primary endpoints) of the present study. This pharmacokinetic, open, 1-session trial on 12 healthy, male, infrequently Cannabis smoking volunteers is focussed on the GC/MS profiling of THC and metabolites in urine and plasma after standardized smoking of a single 7% THC Cannabis cigarette of the Dutch Ministry of Health, Welfare & Sport, Office of Medicinal Cannabis. Pharmacodynamic measurements (secondary endpoints) include the side-effects monitoring by using Visual Analog Scales and checking vital functions.

Study Type

Observational

Enrollment (Actual)

12

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Switzerland
      • Bern, Switzerland, CH-3010
        • Clinical Investigation Unit (CIU), University Hospital ("Inselspital")

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 30 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Sampling Method

Non-Probability Sample

Study Population

Healthy male subjects; light (max. 1/month), infrequent Cannabis smokers, medium (max. 15/month) tobacco smokers experienced in the inhalation technique; age 20-30 years; body weight 75+/-15 kg, normal medical history physical examination, passed laboratory tests (safety lab), normal lung functions (spirometry).

Description

Inclusion Criteria:

  • Healthy male subjects; light (max. 1/month), infrequent Cannabis smokers, medium (max. 15/month) tobacco smokers experienced in the inhalation technique; age 20-30 years; body weight 75+/-15 kg; evaluation based on normal medical history, physical examination, laboratory tests (safety lab), normal lung functions (spirometry).
  • Informed consent after information (written) by the study physician and principal investigator on nature, significance and scope of the trial.
  • Informed consent by the volunteer regarding transmitting trial-related data to the sponsor and to the competent control authorities.

Exclusion Criteria:

  • Hypersensitivity to cannabinoids. - Regular (more than once per month, weekly or daily) Cannabis use. - The use of alcohol, any medication or drugs, especially Cannabis, within the last 2 days prior to and during the 1-day session is not allowed. Cannabis use is also not allowed during the following 11 days of urine collection, i.e. up to the end of the study.
  • Positive Cannabis urine test before the session.
  • Driving any vehicle, and operating with machines during and within 48 h after the session.
  • Psychotic or vulnerable subjects.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Federal Office of Sports, Switzerland

Investigators

  • Principal Investigator: Rudolf Brenneisen, PhD, Prof, University of Bern, Dept. Clinical Research

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2007

Primary Completion (Actual)

December 1, 2007

Study Completion (Actual)

May 1, 2008

Study Registration Dates

First Submitted

September 24, 2007

First Submitted That Met QC Criteria

September 24, 2007

First Posted (Estimate)

September 26, 2007

Study Record Updates

Last Update Posted (Estimate)

May 12, 2008

Last Update Submitted That Met QC Criteria

May 6, 2008

Last Verified

May 1, 2008

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • KEK-33/07

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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