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The Boston Globe

Health & wellness

State approves medical marijuana regulations

Companies hoping to sell marijuana for medical use in Massachusetts will be required to hire an independent lab to test their products for contaminants, such as heavy metals and pesticides, under final rules that regulators approved by unanimous vote Wednesday morning.

The provision is among dozens of changes made by the Department of Public Health to draft rules the agency released in March, after staffers reviewed hundreds of suggestions from advocates on all sides of the contentious issue. The rules previously would have allowed marijuana dispensaries to conduct their own testing.

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