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One of the biggest changes to the cannabis industry was the requirement for laboratory testing of all products that would be sold to consumers at the dispensaries. This occurred in 2018 when Prop 64, recreational adult use of cannabis in California, was enacted. The Department of Cannabis Control – then called the Bureau of Cannabis Control – made very specific rules regarding cannabis businesses and products within the regulated cannabis industry. Testing was also to be regulated and only was to be done by licensed and accredited cannabis testing laboratories. One of these new requirements included the testing of potency, pesticides, heavy metals, residual solvents, microbials, mycotoxins, and foreign materials, and the test results were formatted into a Certificate of Analysis (COA). The COAs were to be provided to the DCC/BCC, businesses, retailers and even consumers should they inquire about them. The intention was to regulate the products that were being sold to consumers and to verify that cannabis and cannabis products were labeled accurately and that they were safe for consumption.