This article was produced for ProPublica’s Local Reporting Network in partnership with The Denver Gazette. Sign up for Dispatches to get our stories in your inbox every week. Colorado marijuana ...

Getting your Trinity Audio player ready... Colorado’s health department and the Marijuana Enforcement Division will collect samples from dispensaries around the state in a one-time spot-check for ...

Getting your Trinity Audio player ready... When Colorado and other states began legalizing marijuana more than a decade ago, they faced a problem: how to guarantee a safe product, with little data ...

Colorado marijuana manufacturers would no longer be allowed to choose which product samples they send for mandatory lab testing under a new regulatory proposal discussed at a policy forum on Friday.