Colorado marijuana safety warnings followed product launch by 5.7 months on average
A state audit found gaps in testing and consumer alerts. Agencies agreed to changes, including package QR codes and a risk-based oversight strategy targeted for 2028.
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Colorado marijuana products cited in 2025 safety advisories had been on the market an average of 5.7 months before warnings were issued, state auditors found at an Oct. 19 hearing.
The September 2026 Marijuana Consumer Safety Performance Audit identified weaknesses in testing and oversight that auditors said limit the state’s ability to detect and respond to risks. They found no evidence of widespread confirmed safety problems, but said businesses select and submit their own test samples, exemptions leave some products untested, and state records do not reliably establish compliance.
The audit also found gaps in consumer warnings. Auditors estimated that fewer than 1% of likely marijuana users receive advisories directly, and said 21 of 48 advisories issued from 2023 through 2025 were not straightforward to read. The state reference laboratory could not perform all required tests for marijuana products as of May 2026, limiting the state’s capacity for independent testing during investigations and product surveillance.
The 5.7-month measure runs from when products entered the market, not from when regulators first learned of a concern. In a separate review of 13 advisories, auditors found an average of about 3.5 months from the start of an investigation to an advisory.
The Marijuana Enforcement Division and the Colorado Department of Public Health and Environment agreed to the audit’s recommendations, but most changes remain planned. The division plans to add a package QR code linking to safety advisories by the end of 2026 and simplify its advisory-review process. It is targeting rulemaking on recalls and consumer notifications by November 2027.
The division plans to report by mid-2027 on its review of testing rules and exemptions, and aims to complete a written, risk-based oversight strategy by March 2028. A case-management system expected in spring 2027 is intended to improve investigation records. The two agencies also plan to clarify laboratory-oversight expectations and update their interagency agreement. The health department said it had already changed its record-retention practices.