So Long for THCA Products
Written by on June 15, 2023
Ever since Congress passed the Agricultural Improvements Act of 2018 (or 2018 Farm Bill), people have tried to find creative ways to sell intoxicating hemp-derived products. One example of this is THCA products, such as THCA flower, which contain very high levels of THCA. Today, I want to examine the legal status of THCA products and why the “loophole” seems like it’s coming to an end.
A primer on the 2018 Farm Bill and THCA
For starters, Hemp may only have 0.3% delta-9 tetrahydrocannabinol (THC). According to the DEA, if hemp or its derivatives contain levels of THC in excess of 0.3%, they are considered marijuana. The issue is that hemp also generally delta-9 tetrahydrocannabinol acid (THCA). And THCA, when subjected to heat, converts into THC.
While THCA itself is not referred to in the federal definitions of marijuana or hemp, it nevertheless plays an essential role in the determination of a products status as legal or illegal because of the conversion to THC. The 2018 Farm Bill mandates that all hemp be tested for “total THC” – which is defined to include the actual THC content plus the THCA converted into THC. If the sum of THC using this method exceeds 0.3%, the hemp must be destroyed.
Interestingly, there are different ways that THCA is converted into THC, and the method is referred to as post-decarboxylation. The U.S. Department of Agriculture’s (USDA) 2018 Farm Bill regulations define this process as follows:
In the context of testing methodologies for THC concentration levels in hemp, means a value determined after the process of decarboxylation that determines the potential total delta-9 tetrahydrocannabinol content derived from the sum of the THC and THCA content and reported on a dry weight basis. The post-decarboxylation value of THC can be calculated by using a chromatograph technique using heat, gas chromatography, through which THCA is converted from its acid form to its neutral form, THC. Thus, this test calculates the total potential THC in a given sample. The post-decarboxylation value of THC can also be calculated by using a liquid chromatograph technique, which keeps the THCA intact. This technique requires the use of the following conversion: [Total THC = (0.877 x THCA) + THC] which calculates the potential total THC in a given sample. See the definition for decarboxylation.
In plain English, gas chromatography heats THCA until it converts to THC, whereas liquid chromatography does not convert the THCA but applies a formula that is used to calculate the total THC level. There is a pretty serious debate in the industry about which of these two methods is better, but I’ll leave that for a different day. For the time being, let’s look at how this effects THCA products.
What proponents of THCA products argue
Both the 2018 Farm Bill and USDA mandate total THC testing on pre-harvest hemp batches. They do not mandate testing of post-harvest hemp or on hemp products. The Controlled Substances Act (CSA), which outlaws marijuana, contains no specific mandate to test hemp products since hemp is not controlled.
This all raises a key question: If hemp passes pre-harvest testing (i.e., has levels of THC and THCA below 2018 Farm Bill requirements) and at any point after has excess THCA, is it controlled? In other words, if after testing a super high amount of THCA grows on the plant, so much so that it would become “hot” if tested again, would it be illegal? Some commentators originally believed the answer was “no” – at least under federal law. Folks like Rod Kight argued (see here and here) that because these products would have passed testing, their later excessive THCA content was immaterial under federal law. Rod and others have written plenty on this topic and I don’t want to paraphrase too much, so you should check out their posts if you are interested.
Why I think THCA products are problematic
I tend to think that Rod and others who take this position are onto something important. That said, I think their arguments fail to adequately address two practical concerns for THCA products.
First, state law is also important to consider. Even if something is allowed federally, if it is banned in a state, it can’t be sold there. Many states have total THC requirements on hemp products which would categorically outlaw THCA products in my view. So even if THCA products were legal federally, that would be purely academic when applied in a given state. I should mention that Rod does point out that he only discusses federal law, but my point is that we cannot look at federal law in a vacuum. In a state where total THC of products is a required testing element, then these products would be illegal, hands down.
Second, practically speaking, claiming that THCA products are legal is a tough sell to law enforcement or a court that is not familiar with the nuances of federal hemp laws. Imagine a truck driver gets pulled over with a car full of THCA products with 25% THCA. Those products, when tested, will have levels of THC in the double digits. That driver is going to jail, and will have to do their best to persuade a court that a gap in testing requirements under the 2018 Farm Bill makes their product lawful. Even assuming that argument is solid, there are just too many possibilities that law enforcement won’t agree. This is an issue that would likely need to be resolved in the appellate courts, which would be expensive, time consuming, and risky.
What the DEA says about THCA products
The DEA seems to have settled the issue for now. In a partially redacted letter, which Rod analyzed here, the DEA claimed that THCA products are illegal because THCA must be converted into THC under the 2018 Farm Bill. Rod picks this position apart essentially as I noted above. While, again, I think Rod’s argument has legs, it becomes much more difficult to deal with law enforcement and courts when the DEA claims that THCA products are illegal.
In the near future, it’s expected that the DEA is going to take additional regulatory actions with respect to cannabinoid products. Who knows what that will look like now or whether THCA products will officially be on the chopping block. We could also see Congress take action, when the Farm Bill is renewed later this year. For the time being, stay tuned to the Canna Law Blog for additional cannabinoid developments.