An analysis of 23 cannabis samples from 10 dispensaries found a majority had at least 30% less THC than they were reported to have. Zenkyphoto/iStock via Getty Images Plus Cannabis flower sold in ...

A majority of cannabis flower products purchased at licensed retail pot shops in Colorado contained less THC than indicated on the label, according to a study performed by a researcher at the ...

Lab results showed that many contained illegal amounts of THC, including two vape pens over 200 times the federal limit.

Michigan cannabis customers enjoy strong weed, but many within the industry say high demand has led to questionable conduct by greedy marijuana growers, producers and testing labs. Growers pressure ...

LANSING, MI -- Michigan marijuana customers want to get high, but the information they use to achieve that may be flawed, industry insiders and regulators say. Test results, specifically for THC ...

Arizona's marijuana-testing labs have decreased from 18 in early 2024 to 11 by mid-2025. Dispensary pressure to manipulate test results, financial difficulties and business disputes contributed to ...

Walk into almost any dispensary today and you’ll hear it: “This one’s testing at 32%.” Budtenders pitch high-THC flower as if it were golden nuggets, consumers rush to grab the jars with the highest ...

A customer enters the front door of a cannabis retailer in New York. Cannabis retailers say it's hard to sell flower with less than 20% THCa, the form of tetrahydrocannabinol that becomes psychoactive ...

Cannabis flower sold in Colorado claims to contain much more tetrahydrocannabinol, or THC, than it actually does, according to my findings published in the peer-reviewed journal PLOS One. THC is the ...