It would seem that every time they make up a batch of tablets, the mixture of chemicals would be a trace different - no way to constantly duplicate it the same, even by machine - so it seems “CSI” possible, but not sure in RL it is.
well, the ‘first’ methadone from Kapoor was liquid
the sep 15th ‘undelivered’ list was for pills
Monroe has said that DS died from ‘pills’ not liquid
How he knew, I don’t know, but I would imagine there would be different metabolite markers for different forms of the drug?