Two CBD products in three did not hold what the label claimed
Of 84 products bought online, 30.95% held cannabidiol within a tenth of the claimed amount, and more held too much than too little. A later batch of 80 put that at 54%.
What the study found
Fewer than a third of cannabidiol products matched their label
Of 84 products bought online in 2016, 30.95% contained cannabidiol within a tenth of the amount claimed, and more held too much than too little. A later analysis of 80 Kentucky products put that figure at 54%. Drinks were the worst category tested, averaging 59.93% of what the label said.
The caveat · Each study used its own tolerance
Each study sets its own tolerance — a tenth either way here, a stricter band for the drinks — so the percentages describe different tests and should not be pooled. The samples are snapshots too: one online channel in 2016, one US state later, with single-figure counts inside some categories.