After assessments at state-run labs revealed a dangerous chemical in cannabis that a private lab had cleared for sale, the California Department of Cannabis Control revoked the license of a professional testing laboratory.

A number of state-regulated cannabis markets and a national organization of state regulators think that oversight at so-called “reference laboratories” may be accepted as best practice and should be accepted in all state-regulated markets.

Absent research facilities, some states deal personal, third-party labs to check licensed cannabis labs ‘ compliance with safety standards as well as the stability of THC-potency results.

However, a glaring space, which critics claim raises serious questions about product safety and labeling, is found in more than half of the nation’s largest cannabis markets, according to a study by MJBizDaily.

This piece originally appeared on MJBizDaily. Below is the rest of the narrative.

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