Colorado’s health department and the Marijuana Enforcement Division will collect samples from dispensaries around the state in a one-time spot-check for contaminants or mislabeled potency.

An industry bulletin posted Friday said the Colorado Department of Public Health and Environment’s lab would analyze the samples through January. The agencies plan to compile a report in the spring, though they would take steps to remove any contaminated batches before then.

How contaminated weed gets by Colorado’s strict cannabis testing guidelines

Colorado requires marijuana growers and manufacturers of edibles and concentrates to test for mold, yeast and certain heavy metals and pesticides. The companies supply their own sample to labs, creating the possibility that they could doctor the samples to

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