11-nor-delta-9-tetrahydrocannabinol-9-carboxylic acid is a metabolite of Tetrahydrocannabinol found in cannabis. Cannabis contains psychoactive cannabinoids including THC (delta9 tetrahydrocannabinol) and the non-psychoactive cannabidiol (CBD).

All forms of the cannabis plant which contain cannabinoids or THC compounds are banned In-Competition, this includes synthetic cannabinoids or products which mimic the effects of THC. 

CBD is the only exception, however athletes considering the use of a CBD product need to be aware of the risk of use.


  • Tetrahydrocannabinoidols (THC)
  • Marijuana Hash / hashish
  • Hash oil
  • Synthetic cannabinoids which mimic THC


  • Cannabidiol (CBD)


Related substances


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