That would be great. Based on my quick Google search, it seems to be two milligrams. That seems to be the consensus.
On the new exemption from the Controlled Drugs and Substances Act for personal possession of “small amounts” of certain illegal drugs in British Columbia, I believe the definition of a small amount in this case is 2.5 grams, or more than 1,000 lethal doses. I'm not a doctor, but that's my understanding from a quick Google search.
For any of the witnesses, if your child were at a party with nine other people, and someone at that party was found to be in possession of 1,000 lethal doses of fentanyl, how would you feel? Would you believe that 1,000 lethal doses was simply for personal possession?