Massachusetts Potency Audit Flags 13 Cannabis Flower Products as Noncompliant

Massachusetts regulators have completed their first shelf audit of THC potency on cannabis flower labels, pulling 63 products from 62 producers off dispensary and retail shelves and finding that most labels were accurate — but flagging 13 products that fell outside the state’s acceptable range and are now under sales holds.

The Cannabis Control Commission announced the results on August 13, 2026, saying it has begun notifying the producers behind the 13 noncompliant products and has placed holds preventing further sales. Producers who receive a red notice must recall and repurpose the product with new testing, recall and relabel it with the audit result, retest it, or destroy it.

“The Commission has a responsibility as a regulatory and consumer protection agency to ensure product labels are accurate,” Chair Chris Harding said in the announcement. “This is also a matter of health and safety for medical marijuana patients who rely on potency for accurate dosing.”

The stakes behind the audit are practical. Flower with higher THC levels generally commands higher prices on the adult-use market, so an inflated label overcharges buyers; on the medical side, patients dose by potency. Commission regulations require flower sold to consumers and patients to carry labels detailing cannabinoid content, with the state’s 10 Independent Testing Laboratories evaluating THC as part of required product testing.

How the Potency Audit Measured Labels

The audit set a defined band for accuracy: a label is compliant when tested potency falls within 75% to 125% of what the label states. A product labeled at 15% THC, for example, has an acceptable range of 11.25% to 18.75% total THC. The Commission built that band around the inherent variation between plants and variables like shelf stability, drawing on standards in other jurisdictions, available research, and a comparison study of existing lab results when it announced the audit in May.

The Commission rated each compliant product “green” for high accuracy or “yellow” for landing near the edge of the range. Thirteen samples rated “red” for falling outside it. Seven products tested within 2 percent of their labeled potency. Commission staff selected products directly off the shelves of retail stores and medical dispensaries and used the state’s independent testing labs to verify the potency amounts.

By the Numbers

• 63 flower products sampled from 62 producers
• 13 products rated red, outside the acceptable potency range
• 7 products within 2 percent of labeled potency
• Acceptable range: 75% to 125% of the THC stated on the label
• 10 Independent Testing Laboratories licensed in Massachusetts

What Happens Next for Producers and Regulators

The Commission began alerting affected producers on August 13, 2026, with notices continuing on a rolling basis; the notices will be posted publicly through the agency’s Investigations and Enforcement portal. Retailers and medical dispensaries are not responsible for label accuracy but may choose to remove and destroy affected products, and consumers who bought them can contact the producer using the information on product labels.

The audit lands in the middle of a broader testing overhaul. The Commission holds a public hearing on August 25, 2026 to gather feedback on its testing regulations before Commissioners begin a regulatory update in September; written comments close at 5 p.m. that day, and speakers can sign up through August 23. Executive Director Travis Ahern framed the audit as groundwork for what comes next.

“This shelf audit represents the continuing work of our internal testing task force, which we created to focus on testing issues as part of our mission to oversee a safe, equitable cannabis marketplace in Massachusetts,” Ahern said. “The audit will also help us calibrate future audits as we move toward random testing for contaminants of concern, including pesticides, heavy metals, yeast and mold, and bacteria.”

The task force behind the audit has teeth: it grew out of the investigation that produced a summary suspension order against Assured Testing Laboratories over falsified test results, which ended in a stipulated agreement carrying a fine and an overhaul of the lab’s personnel and policies. The Commission has since required every licensed lab to upload digital certificates of analysis after each product test and is working with Metrc, the state’s seed-to-sale tracking system, to make those certificates available to consumers and patients.

The work also feeds into the Commission’s implementation of the cannabis modernization law signed in April 2026, which requires an online portal for reports of alleged non-compliance — a tipline already in operation that will expand online. MyCannabis covered the Commission’s testing-regulations review when the public comment period opened earlier in August.

For the 13 producers now under holds, the immediate clock is the follow-up requirement: repurpose, relabel, retest, or destroy. For everyone else, the September regulatory update is the next checkpoint, with the audit’s numbers now serving as the baseline the Commission will calibrate against.