While the THC content listed on the packaging of a commercial cannabis edible will certainly give you a good guideline, it cannot be relied upon as entirely accurate. First of all, results vary spectacularly from one testing laboratory, meaning that one product tested multiple times may come back with multiple results. Not only this, but as it is fundamentally impossible for each and every product to be tested individually, it is largely inevitable that some will roll off the production lines stronger or weaker than others. What’s important to remember is that given the fact that the industry as a whole is still in its infancy, testing methods and in many cases the production methods themselves are not exactly 100% reliable in terms of consistency. Take into account what the packaging says by all means – just don’t take it as gospel.