Last verified: March 2026

Metrc: The System Colorado Built

Metrc (Marijuana Enforcement Tracking Reporting Compliance) went live for medical cannabis in Colorado in 2011 — making it the first state vendor cannabis tracking system in the nation. It expanded to recreational in 2014 and has since been adopted by 15+ other states.

Every plant and product receives an RFID tag tracking it from planting through cultivation, processing, packaging, and sale. A Brookings Institution report called Metrc "the backbone of the Colorado regulatory system." The system ensures that every legal cannabis product can be traced back to its source.

What Gets Tested

All cannabis products sold in Colorado must pass mandatory testing for:

• Potency: THC and CBD content, verified against label claims
• Pesticides: Screening for prohibited pesticide residues
• Heavy metals: Lead, mercury, arsenic, and cadmium
• Microbials: Mold, yeast, E. coli, Salmonella, and other contaminants
• Residual solvents: For concentrate products manufactured using chemical extraction
• Mycotoxins: Toxic compounds produced by molds

Compliance Track Record

The MED's 26-person field investigations team conducted 469 underage compliance checks in 2025 with a 99% compliance rate. This demonstrates the system's effectiveness at preventing diversion and underage access. Failed compliance checks result in fines, license suspension, or revocation.

Why Colorado's Testing Matters

Colorado's testing infrastructure serves as both consumer protection and industry credibility. Every product on a dispensary shelf has been tested by a licensed third-party laboratory, tracked through Metrc, and verified for potency and safety. This level of oversight is why the legal market can confidently claim superiority over illicit products — and why Colorado's regulatory framework became the model for the nation.