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Cannabinoids (Cannabis)
Download a printable version of the IRB Guide to Cannabinoids (Cannabis) in Adobe PDF format:
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- What are Cannabinoids (Cannabis)?
- How does it affect the body?
- How long does Cannabis stay in your system?
- Can a Player test positive through passive smoking?
- What happens if I test positive for Cannabis?
1. What are Cannabinoids (Cannabis)?
Cannabinoids are one of the most commonly used illicit drugs and can be found within the dried flowers, leaves or resin of the Cannabis plant. Cannabis may also be known as marijuana, pot, hash, ganja, green or weed. It is most commonly smoked but can also be eaten.
Cannabis use is most commonly associated with recreational or social settings but regardless of the environment in which it is taken, if it is found in your system on Match day there are serious consequences.
Cannabinoids are listed on the World Anti-Doping Agency (WADA) Prohibited List and have been prohibited In-Competition in Rugby since 1 January 2004.
Back to top2. How does it affect the body?
The active ingredient in Cannabinoids, delta-9-tetrahydrocannabinol (THC) leads to feelings of euphoria and relaxation.
Other affects on the body include:
- Impaired balance, co-ordination, concentration
- Slowed reaction time
- Impaired motor skills
- Drowsiness
- Dryness of mouth
Long terms risks may include:
- Mood swings
- Feelings of anxiety or paranoia
- Memory impairment
- Chronic bronchitis
- Increased risk of lung, mouth, tongue, and throat cancer
3. How long does Cannabis stay in your system?
THC can be detected in the body up to several weeks after initial ingestion because it binds to the fatty tissue in the body where it is then released slowly. Clearance times may also be affected by the amount consumed, frequency of use, the potency of the Cannabis and how physically active the person is.
REMEMBER - a Player can test positive for Cannabis even if its use was in the days or weeks prior to a Match.
Back to top4. Can a Player test positive through passive smoking?
A threshold level of 15ng/ml has been set by WADA to rule out a positive result due to passive inhalation of Cannabis smoke. However, it is advisable that if you are in a room where Cannabis is being smoked you should remove yourself.
Back to top5. What happens if I test positive for Cannabis?
Following the return of a positive test result from the laboratory and completion of a preliminary review, you will be notified via your Union and provisionally suspended immediately from all Rugby activity pending the outcome of a hearing. You have the right to have your B Sample analysed should you wish to do so. A hearing will be set up before a Judicial Committee where you will be entitled to present your case. The Judicial Committee will provide a written decision which may be published on the IRB website.
Back to topResources
- Doping Control - be prepared
- Watch sample collection video
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Therapeutic Use Exemptions (TUEs)
Stay informed: read The IRB Guide to Therapeutic Use Exemptions









