Looking to understand what’s really in your THC vape? Then it’s time to get familiar with the COA: the Certificate of Analysis. In this post, we’ll break down what a COA is, why it matters, how to read one, and what common cannabinoids like THC-A, THC-P, HHC, and CBG actually mean.
Note: You’ll often see the Greek delta symbol (Δ) used in lab reports instead of “D”, for example, Δ9-THC instead of D9-THC. Please note that this is the same compound.
What is a COA?
A Certificate of Analysis (COA) is a lab report issued by an independent testing facility. It shows the chemical makeup of a product, including the amount and type of cannabinoids it contains. For THC vapes, the COA is your most reliable source of verified information.
A typical COA includes:
- The cannabinoid profile (with percentages and milligrams per gram)
- The product name, batch number, and unit weight
- The test date and the lab’s name and address
- Sometimes additional tests, such as for heavy metals, solvents, or pesticides
Whether you’re using a THC-A cart, a Delta-8 disposable, or a blend with rare cannabinoids like THCP or HHC-P, the COA tells you what you’re actually inhaling.
Why COAs Matter for THC Vapes
At E-joint.nl, transparency is more than a buzzword. It is the foundation of how we build trust with our community. Every product in our store comes with a verified THC vape COA, clearly linked on the product page. That is not only for compliance or peace of mind, but also because we believe that educated customers make better choices.
Publishing COAs helps us improve brand credibility and increase conversion by showing that we have nothing to hide. We advise against buying THC vapes from any store or marketplace that does not provide a certificate of analysis. If you cannot verify what is inside the product, you are taking unnecessary risks with both safety and quality.
Safety
A THC vape COA is your guarantee that the product has been tested by an independent third-party lab. This means you know exactly what is in your vape, and more importantly, what is not. A proper COA can include screening for harmful substances like heavy metals, residual solvents, or pesticides; things you definitely don’t want to inhale. Without a verified lab report for THC vapes, there is no way to confirm if the product is truly safe to use.
Potency
The COA for your THC vape also tells you the exact potency of the product. It lists all major cannabinoids, including THC-A, Delta-8, and even trace compounds like THC-P or CBN. This helps you choose the right product based on verified lab data, not just flashy packaging or bold claims.
For example, some vapes from well-known brands like Hidden Hills list certain cannabinoids on the label, but the actual THC vape lab report may reveal different values. That’s why a COA is essential if you care about consistency, dosing, and effect.
Always rely on the COA to know exactly what is in your vape. It is the only source you can fully trust.
Trust
Publishing a THC vape certificate of analysis shows a brand has nothing to hide. It builds trust by proving that each product is tested, verified, and transparent. At E-joint.nl, every product page includes a direct link to its COA, so you can see the test results before you buy. That’s how we build a community of informed, confident users who know exactly what they’re getting.
How to Read a COA
If you have never opened a THC vape lab report before, it can look a bit technical. But once you know what to look for, it becomes a powerful tool to understand exactly what you are vaping. Here is how to read a COA for a THC vape in four simple steps.
Cannabinoid Profile
This section is the most important, and shows which cannabinoids are present in the product, along with their exact percentages and milligrams per gram (mg/g). Key compounds to look for include:
- Delta-9 THC
- THC-A
- Delta-8 THC
- CBD, CBG, CBN, HHC, THC-P (depending on the blend)
Most COAs will include both the percentage of each cannabinoid and the total active cannabinoids. These values tell you how potent the product is and what effects you might expect. Always check the mass percentage for each compound. For a full explanation of these cannabinoids and what they do, keep reading.
Product and Batch Details
Check that the COA matches the product you purchased. It should list the product name, batch number and strain. If this information is missing or doesn’t align with the packaging, it’s a red flag.
Lab Information
A valid THC vape COA will include the name, address, and license number of the testing lab. Reputable labs are independent and clearly state their methods and equipment.
Explanation of Common Cannabinoids
A THC vape COA often lists multiple cannabinoids, each with its own effects and strength. To help you understand what you are vaping, we have summarized the most common ones. From familiar compounds like Delta-9 THC to lesser-known names like THC-P and HHC-P, this overview will help you interpret your COA with confidence.
Δ9-THC
Also known as: D9-THC, Delta-9 THC, D9, Δ9-tetrahydrocannabinol
What is it?
Δ9-THC is the most well-known and well-researched psychoactive cannabinoid found in the cannabis plant. It occurs naturally and is formed when THC-A is exposed to heat — a process called decarboxylation. On a THC vape COA, Δ9-THC is the compound most directly linked to the classic THC experience: a noticeable, full-spectrum high. It is widely considered the most desirable cannabinoid due to its strong, consistent psychoactive effects and naturally occurring form.
Effects
Clear mental euphoria, strong body relaxation, enhanced mood, altered perception of time and space, and increased appetite. Δ9-THC delivers the “true high” most users associate with cannabis and is often seen as the gold standard for psychoactive effect.
Potency / Dosage
Δ9-THC is one of the most potent active ingredients in any THC vape. On a THC vape lab report, a concentration of 15 to 30 percent is considered strong. Some premium distillate-based vapes may exceed 30 percent, offering an intense experience that is best suited for experienced users.
At E-joint.nl, our Flower Dept. products feature high levels of Δ9-THC and are among the most powerful vapes in our collection, ideal for those who want a clean and classic THC effect.
Δ8-THC
Also known as: D8-THC, Delta-8 THC, D8, Δ8-tetrahydrocannabinol
What is it?
Δ8-THC is a naturally occurring cannabinoid that is chemically similar to Δ9-THC but with a slightly different molecular structure. It is often produced by converting CBD through a controlled process, since it appears only in trace amounts in raw cannabis. On a THC vape COA, Δ8-THC is identified as a psychoactive compound, but with milder effects compared to Delta-9 and is generally used as a filler cannaboid. It is popular among users who want a more balanced, clear-headed high without feeling overwhelmed.
Effects
Subtle euphoria, gentle body relaxation, light mental uplift, and reduced anxiety. Many users report feeling functional and focused while still experiencing a THC-like buzz. Δ8-THC is also known for producing less paranoia and is often chosen for daytime use.
Potency / Dosage
In most THC vape lab reports, concentrations of Δ8-THC range between 10 and 70 percent, especially in blends where it is the main active ingredient. Because it is less potent than Delta-9, higher percentages are normal and safe for most users. Vapes that contain only Delta-8 are often a good starting point for newer users or those who prefer a smoother experience with less intensity.
THC-A
Also known as: THCA, Δ9-THCA
THC-A is the non-psychoactive acidic form of THC. It occurs naturally in raw cannabis and converts into active Δ9-THC when heated, a process called decarboxylation. However, unlike other cannabinoids, THC-A is crystalline in its raw form, which makes it difficult to keep fully dissolved in a vape liquid. With added terpenes and/or CBC, it’s possible to dissolve THC-A in a vape format. The oil will be less liquid, but still dissolved, for these vapes it’s recommended to use a preheat function to loosen the oil.
Effects
THC-A itself does not cause a high until it is heated. Once vaporized, it becomes Δ9-THC and delivers exactly the same familiar psychoactive effects: strong euphoria, deep body relaxation, and elevated mood.
Potency / Dosage
On a THC vape lab report, THC-A is usually listed in mg/g and makes up a portion of the total active cannabinoids. Because of its crystalline structure, pure THC-A vapes are nearly impossible, unless you want visible crystals floating in your cart. Concentrations between 10 and 50 percent THC-A are considered realistic, as long as the blend includes enough liquid cannabinoids or added terpenes to maintain flow and stability. Be careful of brands marketing THCA as 50%+ THC-A, this is practically impossible in liquid form.
THC-P
Also known as: D9-THCP, Delta-9 Tetrahydrocannabiphorol, THCP
What is it?
THC-P is a rare and highly potent cannabinoid first identified in 2019. Structurally similar to Δ9-THC, it binds to the body’s CB1 receptors with up to 30 times higher affinity, making it one of the most powerful psychoactive cannabinoids known to date. On a THC vape COA, THC-P is typically present in very small amounts, often just 1 to 10 percent, but can still contribute significantly to the overall experience due to its intensity.
Effects
Deep body sedation, enhanced mental euphoria, heightened sensory perception, and an extended high that can last longer than other cannabinoids. THC-P is known for its slow onset and long duration, which can surprise users expecting the faster effects of traditional THC. It’s best approached with caution, especially in high-potency blends.
Potency / Dosage
Because THC-P is so potent, even small concentrations, as low as 1 to 10 percent on a THC vape lab report, can produce strong effects. Vapes that contain higher levels should only be used by experienced consumers who are comfortable with powerful, long-lasting highs. Unlike other cannabinoids, THC-P is never the dominant compound in a vape, but it is often added intentionally in trace amounts to enhance the entourage effect.
HHC
Also known as: 9R-HHC, 9S-HHC, D9-HHC, (6aR,9R,10aR)-HHC, (6aR,9S,10aR)-HHC, Hexahydrocannabinol, Hydrogenated THC.
What is it?
HHC is a semi-synthetic cannabinoid that occurs in trace amounts in cannabis but is usually produced by hydrogenating Δ9-THC or CBD. This process alters the molecular structure slightly, resulting in a compound that is more stable, less sensitive to oxidation, and longer-lasting on the shelf. On a THC vape COA, HHC may appear in two forms: 9R-HHC and 9S-HHC, with 9R believed to be the more active isomer.
Effects
Mild euphoria, mood enhancement, mental clarity, and gentle physical relaxation. Many users describe HHC as a smoother, more clear-headed alternative to Delta-9 THC, with less anxiety and paranoia. It provides a mild to moderate psychoactive effect that is suitable for daytime use or low-key relaxation.
Potency / Dosage
HHC is generally considered less potent than Δ9-THC, but slightly stronger than Delta-8. On a THC vape lab report, HHC concentrations often range from 50 to 90 percent in vapes where it is the primary ingredient. Because effects vary between users, it is recommended to start low and observe your response.
HHC-P
Also known as: 9R-HHC, 9S-HHC, D9-HHC, (6aR,9R,10aR)-HHC, (6aR,9S,10aR)-HHC, Hexahydrocannabinol, Hydrogenated THC.
What is it?
HHC is a semi-synthetic cannabinoid that occurs in trace amounts in cannabis but is usually produced by hydrogenating Δ9-THC or CBD. This process alters the molecular structure slightly, resulting in a compound that is more stable, less sensitive to oxidation, and longer-lasting on the shelf. On a THC vape COA, HHC may appear in two forms: 9R-HHC and 9S-HHC, with 9R believed to be the more active isomer.
Effects
Mild euphoria, mood enhancement, mental clarity, and gentle physical relaxation. Many users describe HHC as a smoother, more clear-headed alternative to Delta-9 THC, with less anxiety and paranoia. It provides a mild to moderate psychoactive effect that is suitable for daytime use or low-key relaxation.
Potency / Dosage
HHC is generally considered less potent than Δ9-THC, but slightly stronger than Delta-8. On a THC vape lab report, HHC concentrations often range from 50 to 90 percent in vapes where it is the primary ingredient. Because effects vary between users, it is recommended to start low and observe your response.
