Three laboratories in the Denver area are handling the bulk of testing for safety and potency of recreational marijuana in Colorado. State law requires manufacturers of edibles like marijuana-infused brownies, to have their products tested for potency. And, growers of marijuana plants are subject to testing too. Denver-based journalist Nelson Harvey visited the labs and wrote a story for the Aspen Business Journal. Aspen Public Radio's Marci Krivonen spoke with him and asked how scientists are doing such tests.
Three Labs Handling Bulk Of Marijuana Testing In Colorado

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