A Certificate of Analysis (COA) is a lab-issued document that verifies the potency, cannabinoid profile, and safety testing results for a cannabis product. COAs are issued by independent, accredited laboratories.
Understanding a COA helps you verify that a product has been tested for potency (THC, CBD levels), terpenes, and potential contaminants like pesticides, heavy metals, and mold.
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COAs give consumers an independent, verified snapshot of what is actually in a cannabis product — separate from brand marketing claims. They are required by law in most regulated cannabis markets.