State plus federal governments impose rules on medications to protect patients. You want to trust the drugs you get from the pharmacy plus never worry if there are contaminants inside prefer residual solvents. Beyond this, the label needs to accurately display the strength of the medication. Although a 10% variance is common, you can’t possibly acquire adequate care if each biweekly batch of medicine varies by 30% or more in its potency. This would render many mental health drugs as ineffective. Not only would this anger people if they discovered the medication lab testing was bogus, there would also be those directly suffering from the weak or ineffective drugs. Dealing with legal marijuana in states that have legalization is no different. Although rules plus regulations differ from state to state, most require some form of lab testing on all products before they reach the consumer. However, the rules of legitimate versus inconclusive lab results are weird for medical marijuana sales versus recreational marijuana sales. You’ll often find more accurate THC percentages on medical cannabis opposed to recreational cannabis from the same exact dispensary. For instance, I bought a batch of top-shelf cultivar of Girl Scout Cookies from a dispensary’s medical marijuana menu plus it inspected at 27% THC plus was some of the best marijuana I have ever smoked. When I bought a batch that was allegedly 34% THC off the recreational menu at the same exact dispensary, I wasn’t impressed by it. I wonder if they’re taking outlier data results instead of an average of them all. In some states testing labs have been busted taking bribes from cannabis companies for favorable test results.