THCA was the single biggest beneficiary of the old rule. Raw cannabis flower can test under 0.3% delta-9 THC while being loaded with THCA, which converts to THC when heated. The new definition measures total THC, so THCA counts. Flower that qualified as hemp on Monday does not on Friday.
The 2018 Farm Bill defined hemp as cannabis containing no more than 0.3% delta-9 THC by dry weight. That measured one molecule. The new definition measures total THC, which folds in THCA and other THC isomers. A plant that passed the old test by holding its THC in acid form does not pass the new one.
This is the provision that does most of the work, and the one fewest people know about. It is not a percentage, it is an absolute quantity per finished package. A 5 milligram gummy fails. A can of THC seltzer fails. A full-spectrum CBD tincture that nobody would call intoxicating can fail as well, simply because a whole bottle adds up.
Anything falling outside the revised definition stops being hemp in the eyes of federal law and is treated as a controlled substance. Industry attorneys have estimated that roughly 95% of the hemp cannabinoid products on shelves today sit outside the new line.
Licensed dispensary flower in a legal state. It is the same plant, tested and taxed, sold by a business with a licence.
Find a licensed dispensary near you| Product | Status |
|---|---|
| Delta-8 THC | Leaves the hemp definition |
| Delta-10 THC | Leaves the hemp definition |
| HHC (hexahydrocannabinol) | Leaves the hemp definition |
| THC-O and other novel acetates | Leaves the hemp definition |
| Hemp-derived delta-9 gummies and edibles | Leaves the hemp definition |
| THC seltzers and hemp beverages | Leaves the hemp definition |
| Hemp vapes and cartridges | Leaves the hemp definition |
| Full-spectrum CBD oil | Partly affected |
| Industrial hemp: fiber, grain and seed oil | Not affected |