Not to discredit you but that is not going to work. You cannot just send a "scoop" of some powder to lab for testing. That is how the whole fiasco in the first lawsuit happened in the first place. It turned out to be a bunch of crap, but that was never posted either as a thread.
In order for proper chain of custody one must have a completely sealed tub and it must be sent to a lab from a retailer that still has some of the first run tubs. Unfortunately, if they do not, then you are SOL. Any joe schmo on the street can open a tub put something in and seal it back up with a hair dryer and shrink wrap.
Sending a baggie full of powder to some lab isn't gonna prove anything except feed the tin foil morons fire.