Most marijuana products in Colorado are mislabeled, with actual THC potency “significantly lower” than the verified lab results, according to the largest study yet of cannabis labeling.
But while concentrates remain more trustworthy than flower products, the latest confirmation of widespread THC potency inflation underscores the need for regulators to independently verify lab results, University of Colorado Boulder researchers wrote in the journal Scientific Reports.
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Widespread allegations that labs artificially inflate THC percentages to please customers have been made for years in the marijuana industry.
It’s a stubborn problem that persists despite an uptick in enforcement in some states.
How the THC potency study worked
In the study, researchers analyzed 277 adult-use marijuana samples from 52 Colorado dispensaries:
178 flower samples. 99
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