Legality of Delta 8 THC, Delta 9 THC, Delta 10 THC, and THCA in Texas
Updated December 2025
You can’t go very far in Texas without seeing a store that sells THC products, whether it is your local headshop or neighborhood convenience store. In fact, THC dispensing vending machines are popping up all over the Lone Star State. Given their widespread prevalence, you might wonder, “If it were illegal, they wouldn’t be able to sell these products, right?”
While you can buy THC products at just about every turn in Austin, the 2025 legislative session brought dramatic changes to the regulatory landscape. Lieutenant Governor Dan Patrick pushed hard for an outright ban on Delta 8 and Delta 9 THC products. The Texas Legislature passed Senate Bill 3, which would have banned virtually all consumable hemp products containing THC. However, Governor Abbott vetoed SB 3 in June 2025, instead calling for a regulatory framework rather than a total ban. What followed was a series of executive actions and new laws that significantly changed—but did not eliminate—the THC market in Texas.
In this article, we will discuss the legality of Delta 8 THC, Delta 9 THC, Delta 10 THC, as well as THCA in Texas. We will also discuss the criminal risks associated with each of these products, particularly those sold as legal products in Texas.
What Changed in 2025?
Before diving into the specifics of each cannabinoid, here are the major 2025 developments every Texan should know:
THC Vape Ban (Effective September 1, 2025): Senate Bill 2024 made it a Class A misdemeanor to market, advertise, offer for sale, or sell any e-cigarette or vape product containing cannabinoids—including hemp-derived Delta 8, Delta 9, Delta 10, THCA, and even CBD. The penalty carries up to one year in jail and a fine of up to $4,000. Notably, SB 2024 criminalizes the sale of cannabinoid vapes but does not independently criminalize mere possession.
Age Restrictions (Executive Order, September 10, 2025): Governor Abbott issued an executive order directing the Texas Department of State Health Services (DSHS) and the Texas Alcoholic Beverage Commission (TABC) to prohibit sales of consumable hemp products containing THC to anyone under 21. Retailers must verify age with government-issued ID. TABC began enforcing this rule for liquor license holders on October 1, 2025.
SB 3 Vetoed: The Legislature’s attempt at an outright ban on intoxicating hemp products was vetoed by Governor Abbott, who cited potential constitutional issues and called for regulation rather than prohibition.
Ongoing Litigation: The Texas Supreme Court case involving Hometown Hero and DSHS’s 2021 attempt to classify Delta 8 as a controlled substance remains pending. A court injunction currently keeps Delta 8 off the formal controlled substances list while the case proceeds.
When is THC illegal in Texas?
The core legal framework remains: THC is illegal to possess in Texas if it is Delta 9 THC and the concentration is greater than 0.3% by dry weight. However, it’s important to understand that this rule applies because of a statutory exemption for “hemp,” not because Texas law only criminalizes Delta 9.
Specifically, Health and Safety Code Section 481.002(5) states that controlled substances do not include “tetrahydrocannabinols in hemp.” This exemption is what carves out legal space for hemp-derived products. Without it, Penalty Group 2 would sweep in “tetrahydrocannabinols, other than marihuana, and synthetic equivalents… and their isomers with similar chemical structure and pharmacological activity.”
As we will discuss later in this article, this exemption is a critical provision that affects how suspected substances are evaluated and prosecuted.
Why are we discussing so many types of THC?
THC, or tetrahydrocannabinol, is a chemical compound found in the cannabis plant that is primarily responsible for the psychoactive effects associated with marijuana use. It interacts with the body’s endocannabinoid system, particularly the CB1 receptors in the brain, to produce effects such as euphoria, relaxation, altered perceptions, and increased appetite.
Quick Reminders from Chemistry Class
Isomers: An isomer refers to a compound that shares the same chemical formula as another compound but has a different arrangement of atoms in the molecule, leading to different properties.
Precursor: A precursor is a compound that participates in a chemical reaction to produce another compound.
What is Delta 8, Delta 9, and Delta 10 THC and THCA?
Delta 8 THC, Delta 9 THC, and Delta 10 THC are isomers, meaning they have the same molecular formula but differ in the arrangement of atoms and the position of their double bonds within the molecule.
What is the difference between Delta 8 THC, Delta 9 THC, Delta 10 THC, and THCA?
Delta 9 THC
This is the most abundant form of THC found in cannabis plants and is well-known for its strong psychoactive effects. It is the standard form of THC that is most commonly associated with the use of cannabis.
Delta 8 THC
Delta 8 is chemically similar to delta 9 THC, but with the double bond on the eighth carbon in the chain, as opposed to the ninth. It is found in much lower concentrations in cannabis plants. Delta 8 THC is known for producing a milder high compared to Delta 9, with less anxiety and paranoia, which some users prefer. It also has potential medicinal benefits but is less potent.
Delta 10 THC
Like Delta 8, Delta 10 THC is found in only trace amounts in natural cannabis. The double bond in Delta 10 is located on the tenth carbon atom. It is generally considered to be less psychoactive than Delta 9 and Delta 8. Users report that Delta 10 offers a more energizing and less intense experience.
THCA
Tetrahydrocannabinolic acid (THCA) is a non-psychotropic acidic cannabinoid naturally occurring in the cannabis plant that serves as a precursor to tetrahydrocannabinol (THC). It is also the most abundant non-psychoactive cannabinoid found in cannabis.
How is THC Prosecuted in Texas?
As the law stands right now in Texas, for THC to be prosecuted as a Penalty Group 2 offense, the State must prove that the substance is not “tetrahydrocannabinols in hemp.” In practice, this typically means proving it is Delta 9 THC in a concentration greater than 0.3% by dry weight. If the prosecution believes that you possessed THC outside the legal hemp definition and the concentration of Delta 9 THC is greater than 0.3% by dry weight, you can be charged with a felony.
What are the risks of possessing Delta 8 THC and Delta 10 THC?
Delta 8 THC and Delta 10 THC non-vape products remain legal in Texas—but with important qualifications.
To understand why Delta 8 and Delta 10 aren’t categorically illegal, you have first to understand how THC is criminalized in Texas.
Texas categorizes cases into penalty groups. Health and Safety Code Section 481.103 defines Penalty Group 2, which includes “any quantity of the following hallucinogenic substances, their salts, isomers, and salts of isomers unless specifically excepted.”
It goes on to include “tetrahydrocannabinols, other than marihuana, and synthetic equivalents of the substances contained in the plant… and their isomers with similar chemical structure and pharmacological activity.”
You would think this means if Delta 8 and Delta 10 are either synthetic equivalents or isomers with similar chemical structure and pharmacological activity they are illegal.
That would be true except for the exemption in Section 481.002, which excludes hemp and THC in hemp.
Hemp is defined in Agriculture Code Section 121.001 and includes “all derivatives, extracts, cannabinoids, isomers, acids, salts, and salts of isomers [of the Cannabis sativa L. plant], whether growing or not, with a delta-9 tetrahydrocannabinol concentration of not more than 0.3 percent on a dry weight basis.”
As a result, any substance that is derived from the Cannabis sativa L. plant (genetically, both marijuana and hemp are the same plant) with a delta 9 THC concentration of 0.3 percent or less is legal, as are all cannabinoids (including Delta 8 and Delta 10) that have an equally low Delta 9 THC concentration.
Critical 2025 Update: The Vape Ban
As of September 1, 2025, it is illegal for retailers to sell Delta 8 or Delta 10 THC in vape form. Senate Bill 2024 makes it a Class A misdemeanor to market or sell any e-cigarette or vape product containing cannabinoids, even if the cannabinoids would otherwise be legal under state and federal law. This means:
- Delta 8/Delta 10 gummies, tinctures, drinks, and edibles remain legal to sell and possess (for those 21+) if they meet hemp definitions
- Delta 8/Delta 10 vapes and e-cigarettes are illegal to sell at retail
- Simple possession of a cannabinoid vape is not independently criminalized by SB 2024, but possession could still trigger enforcement under other statutes
The Ongoing Injunction
It’s also important to note that Delta 8’s current legal status exists partly because of a court injunction. In 2021, DSHS attempted to classify Delta 8 as a Schedule I controlled substance. A hemp producer (Hometown Hero) obtained an injunction blocking that classification, and the case is now pending before the Texas Supreme Court. Until the Court rules, Delta 8 remains off the controlled substances list—but a ruling in favor of DSHS could change that.
Does that mean there’s no risk in purchasing or possessing these products? No.
Read on to understand why possessing something legal in Texas can get you arrested, charged, and become a problem you will spend thousands of dollars to rectify.
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In the field, the police cannot determine concentrations.
In Texas, police use the NARK II Duquenois-Levine Reagent to test for THC in the field. This reagent is part of a presumptive test designed to identify THC in marijuana and other cannabis-related substances. This test is qualitative, not quantitative, meaning it can indicate the presumptive presence of THC but does not specify the concentration. Further, it cannot differentiate between THC isomers such as Delta-9 THC, Delta-8 THC, Delta-10 THC, or THCA.
What this means is officers who suspect a substance might be illegal will use a reagent that cannot distinguish between types of THC (legal or illegal) and gives them no information about concentration. This means they can place you under arrest, and you’ll have to bond out, hire a lawyer, fight the case in court, and very likely pay for your own lab test before the case is resolved.
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THC concentration may vary based on the testing method.
Gas Chromatography
There are several ways to test for THC concentration in a lab. Most criminal labs in Texas use gas chromatography. This is sufficiently accurate (for government work), and perhaps more importantly, it would be virtually impossible to find a criminal lab in Texas without a gas chromatograph. Gas chromatography (GC) is a method used to separate and analyze compounds that can be vaporized, commonly applied in the analysis of THC (tetrahydrocannabinol), the psychoactive component in cannabis.
High-performance liquid chromatography
High-performance liquid chromatography (HPLC) has been reported as the best method for testing cannabinoids.
A key difference between HPLC and GC is that the suspected substance does not have to be heated, unlike GC, which depends on testing a vaporized substance.
Thin-Layer Chromatography
Finally, the cheapest way to test for THC is through Thin-Layer Chromatography (TLC). Producers, sellers, and vendors often use TLC because of the low testing cost. TLC has far lower sensitivity. TLC is more qualitative than quantitative, which means it is better at indicating the presence of a substance rather than accurately measuring its concentration. This can lead to underreporting when precise quantification is necessary, as TLC might not provide the exact levels of THC present.
| Method | Description | Common Use by Law Enforcement | Cost |
|---|---|---|---|
| Gas Chromatography (GC) | Utilizes heat to vaporize and separate compounds, allowing for the detection of various substances, including THC. Often used with a mass spectrometer (GC-MS) for enhanced detection. | Yes. GC is the most commonly used method. | Medium to High |
| High-Performance Liquid Chromatography (HPLC) | Operates at room temperature and can differentiate between non-psychoactive and psychoactive components of cannabis, such as THCA and THC. | No. Most labs do not have HPLC. | High |
| Thin-Layer Chromatography (TLC) | Involves applying samples to a plate and separating them. It is not as precise and is mainly used for screening rather than detailed analysis. | Not used in criminal labs in Texas in THC testing. | Low |
Back to Delta 8 and Delta 10:
If you purchase something with Delta 8 or Delta 10 THC, you still face a risk that a field officer will not be able to distinguish between the isomers of Delta 9 THC. This means you will likely be arrested and have to defend the case in court. You are also running the risk that the lab report you relied on in purchasing the product was not accurate or reliable for the reasons outlined above.
What are the risks of possessing Delta 9 THC sold in low concentration?
Let’s say you buy a product that claims to have Delta 9 THC in a legal concentration that is equal to or less than 0.3% by dry weight. Let’s say the seller even provides a lab test showing the concentration. You might be tempted to think your purchase and possession are perfectly legal, except there’s no way for an officer to know if the THC concentration is greater than 0.3% by dry weight or not. So once the reagent tests show a presumptive positive for THC, you are getting arrested.
2025 Update: If you are under 21, you may also face issues related to the new age restrictions. While Governor Abbott’s executive order primarily targets retailers, purchasing or possessing THC products as a minor could create additional legal complications.
What are the risks of possessing THCA?
THCA deserves its own section and explanation. THCA (tetrahydrocannabinolic acid) is not an isomer of Delta 9 THC; it is a cannabinoid precursor and an acidic form of THC. THCA itself is non-psychoactive, meaning it does not produce the “high” associated with THC. It is found in higher concentrations in fresh, undried cannabis plants, particularly in the raw cannabis buds.
• THCA (C22H30O4): Tetrahydrocannabinolic acid is found in raw and live cannabis plants. It is the non-psychoactive acidic form of THC. THCA does not produce psychoactive effects unless it is decarboxylated, usually through heating.
• Delta-9 THC (C21H30O2): When THCA is exposed to heat, it undergoes a chemical reaction known as decarboxylation, where it loses a carboxyl group (COOH) as carbon dioxide and water. This transformation changes THCA into Delta-9 THC, the well-known psychoactive compound found in cannabis.
THCA has become a popular alternative for individuals in Texas who want the effects of THC without having to possess marijuana and risk an arrest and prosecution that could come with that in Texas.
Is THCA legal in Texas?
THCA derived from hemp (with ≤0.3% Delta 9 THC on a dry-weight basis) is treated as legal hemp under both federal and Texas definitions.
Does that mean you can possess it or convert it to THC by smoking or vaporizing it without consequence? No.
First, the vape ban applies to THCA too. As of September 1, 2025, retailers cannot legally sell THCA vapes or e-cigarettes.
Second, if you were stopped while you were smoking or vaporizing THCA, you would no longer have THCA—you would be in possession of THC.
The other significant risk is the testing. Unlike the testing issues with Delta 8 and Delta 10, the significant risk here is that the testing itself can create the substance law enforcement is looking for and for which prosecutions are based.
Put simply, legal THCA becomes illegal Delta 9 THC when it is heated. In Texas, the most common way criminal labs test cannabinoids is gas chromatography. Heating and vaporizing a sample is a necessary step in gas chromatography. As a result, not only will you be arrested based on a non-specific reagent test, but you will also be prosecuted based on a lab report showing the presence of an illegal concentration of THC. While there are a number of ways to get a case dismissed, you may have to have the sample tested by an outside lab that uses HPLC to prove what you possessed was THCA and not THC.
The “Total THC” Problem
Adding to the complexity, regulators and some labs focus on “total THC”—which is Delta 9 THC plus THCA after decarboxylation—when deciding whether a plant or product qualifies as hemp or marijuana. This means that high-THCA “hemp flower” may be treated as illegal cannabis if the total THC (accounting for what the THCA would convert to when heated) exceeds 0.3%, regardless of how it’s packaged or marketed.
Legal Challenge For Prosecutors
It is important to note that possession charges in Texas require proof of knowledge of the substance’s illegal status. Therefore, having a lab report indicating that a product is within the legal THC limit could be beneficial. Similarly, having a report that documents you were in possession of THCA as opposed to any THC isomer could be helpful.
Where Does Texas Go From Here?
The 2025 legislative session and its aftermath made clear that Texas lawmakers are deeply divided on THC policy. Lieutenant Governor Dan Patrick remains committed to an outright ban and has accused Governor Abbott of effectively legalizing recreational marijuana through his veto of SB 3. Governor Abbott, by contrast, has pushed for a regulatory approach similar to how Texas handles alcohol.
Key takeaways for the current landscape:
- Non-vape Delta 8, Delta 10, and low-concentration Delta 9 products remain legal to sell and possess for adults 21+
- All cannabinoid vapes are illegal to sell at retail as of September 1, 2025
- Age restrictions require consumers to be 21+ and show ID
- THCA flower carries significant risk due to testing methods and the “total THC” calculation
- The Texas Supreme Court could change the legal status of Delta 8 with its pending ruling
- The next regular legislative session begins in January 2027, and additional restrictions or regulations are likely
Despite the evolving regulations, the practical risks we’ve outlined remain: field officers cannot distinguish between legal and illegal THC products, lab testing methods can produce misleading results, and you can still be arrested for possessing a product that is, in fact, legal. The landscape remains intricate and continues to evolve.
Additional Reading
The Legality of CBD Oil in Texas
Arrested for THC in North Texas? Contact Us.
If you have been arrested for possessing THC in North Texas, it’s important to have an experienced defense attorney who understands the intricacies of THC laws in Texas. As you can see, we have a deep understanding of the legal landscape surrounding THC in Texas, including the complexities of Delta 8, Delta 9, Delta 10 THC, and THCA—as well as the 2025 changes to vape laws and age restrictions. Our goal is to get the case dismissed at the outset or resolve it in a manner that will keep your record clean and not negatively impact your future. Call 817-203-2220 to speak with an experienced attorney today.
Last updated: December 2025
