Massachusetts Cannabis Independent Testing Laboratory Requirements

What this entry covers

In Massachusetts, the Cannabis Control Commission (CCC) licenses Independent Testing Laboratories and sets testing requirements for marijuana and marijuana products in 935 CMR 500.000 (adult use) and 935 CMR 501.000 (medical use). Under 935 CMR 500.050(7)(a), before final licensure an Independent Testing Laboratory must be accredited to the most current ISO 17025 by a third-party accrediting body that signs the ILAC Mutual Recognition Arrangement, or be certified, registered or accredited by an organization approved by the Commission. 935 CMR 500.160 requires testing in compliance with CCC protocols, including the Protocol for Sampling and Analysis of Finished Marijuana and Marijuana Products for Marijuana Establishments, Medical Marijuana Treatment Centers and Colocated Marijuana Operations.

MyRHC indexes this framework so practitioners, auditors, and automated agents can find the authoritative primary sources in one place. This page is a navigation aid; it is not legal advice and is not a substitute for the official text.

Official documentation

• Primary official source: https://masscannabiscontrol.com/public-documents/
• 935 CMR 500.000 as effective 2026-09-11 (CCC unofficial copy, PDF): https://masscannabiscontrol.com/wp-content/uploads/2026/09/20260911-935-CMR-500.000.pdf
• CCC news: review of draft testing regulations (2026-10-22): https://masscannabiscontrol.com/2026/10/cannabis-control-commission-to-review-draft-testing-regulations/

Recent changes

• 2026-10-22: The CCC began reviewing draft regulations related to Independent Testing Labs and the testing of cannabis and cannabis products; the CCC states they will be open for public comment in early 2027. CCC
• 2026-09-11: Effective date of the current 935 CMR 500.000 and 935 CMR 501.000 texts listed under Current Regulations on the CCC public documents page. CCC

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