Nearly half of the cannabis flower products sold in Colorado carry potency labels that do not match what is actually in the package, with many suggesting higher THC levels than testing later confirmed. By comparison, cannabis concentrates such as oils and waxes generally reflected their true contents, with 96% found to be labeled correctly.
https://scitechdaily.com/your-weed-might-not-be-as-strong-as-the-label-says-scientists-find/
