THC is the only cannabinoid for which there is a urinary threshold and it is set at 150 ng/mL
https://www.usada.org/athletes/substances/marijuana-faq/#:~:text=What does a threshold for,is below 150 ng%2FmL.
to be honest, i do not know what other substances fall into this category...
i am working under the impression we are just talking about the devil's lettuce...
and i feel like 150 ng/ml is high right now...
i could be totally off base...