They raised the limit. From people I know from testing. You almost have to smoke 3 or less days before the event to not pass. So any fighter not passing because of THC or canniboids, have a problem. And the canniboid CBD I believe has been removed completely. And its only in-competition testing now. And yes it is a PED.
found this but I believe it is now 350ng/mL
The urinary threshold level for the cannabis metabolite Carboxy-THC is 150ng/mL, and WADA accredited laboratories are not required to report adverse analytical findings below this level.