In recent years, Massachusetts has established a comprehensive framework for cannabis testing to ensure consumer safety and product quality. The Cannabis Control Commission (CCC) mandates that all cannabis products undergo rigorous testing for contaminants, including heavy metals, pesticides, mycotoxins, residual solvents, and microbiological impurities. These tests are conducted by Independent Testing Laboratories (ITLs) accredited to the ISO/IEC 17025:2017 standard.
Despite these stringent protocols, challenges persist. In February 2025, the CCC issued a health and safety advisory after discovering that certain cannabis products sold between May 31, 2024, and January 23, 2025, contained yeast and mold levels exceeding acceptable limits. These products had initially passed compliance testing but were later found to be contaminated upon additional examination. Consumers in possession of the affected products were advised to destroy them or return them to the point of purchase.
In response to such incidents, the CCC has tightened testing requirements. Effective April 1, 2025, cannabis businesses are required to submit a single test sample package to one ITL for all compliance testing, eliminating the previous practice of using multiple laboratories for different tests. This measure aims to enhance consistency and reliability in testing outcomes.
Several accredited laboratories operate within Massachusetts, offering a range of testing services:
- MCR Labs: Provides ISO/IEC 17025 accredited testing services, including potency profiles, safety screenings, and plant health assessments.
- ProVerde Laboratories: Offers analytical testing and consulting services, utilizing advanced technologies to ensure accurate results.
- SafeTiva Labs: Specializes in microbiological contaminant testing, mycotoxin analysis, and viroid testing, employing DNA-based methods for rapid and precise results.
These laboratories play a crucial role in upholding the integrity of Massachusetts' cannabis industry by ensuring that products are safe for consumption and meet regulatory standards.
For a more in-depth understanding of cannabis testing procedures and the importance of laboratory analyses, you might find the following video informative.
The Massachusetts Cannabis Control Commission (CCC) has issued a health and safety advisory warning consumers about marijuana products contaminated with high levels of yeast and mold. These products, including flower and pre-rolls, were sold at over two dozen dispensaries and medical treatment centers between May 31, 2024, and January 23, 2025.
Key Takeaways:
- Affected products previously passed compliance testing between March and June 2024 but later failed additional testing.
- The CCC is conducting further investigations and confirmatory retesting before allowing these products back on the market.
- Consumers are urged to check their cannabis products and either destroy or return any affected items for proper disposal.
- Anyone experiencing adverse health effects should seek medical attention and notify their dispensary.
What Products Are Affected?
The advisory lists multiple batches of products from brands like Strane and Garcia Hand Picked. Affected items include pre-rolls and flower, with batch numbers specified in the CCC’s full statement.
Where Were These Products Sold?
More than 30 dispensaries across Massachusetts—including locations in Boston, Fitchburg, Springfield, Worcester, and Northampton—carried the affected products.
Consumers are strongly encouraged to review the full list of impacted dispensaries and products to ensure their purchases are safe.
For the latest updates and official CCC announcements, stay informed with The Healing Center.
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