The UIM anti-doping rules are based on the World Anti-Doping Code and came into force on 1st January 2021. Can be found by clicking on the link below:
https://www.uim.sport/Documents/AdpRelease/AdpRelease3/2021%20Anti-Doping%20and%20Envt.%20rulebook%20-%20published%20on%2006.01.20.pdf
Below a list to useful WADA Documents