THC/CBD QTest Kit: Easy Way to Measure Cannabis Potency
Did you ever asked yourself "How much THC does my weed have?" or questioned the CBD levels of your cannabis flower or extract? With today’s cannabis strains becoming increasingly potent and diverse, guessing the THC or CBD content just doesn’t cut it anymore. That’s where the THC/CBD QTest comes in—a simple, accurate, and user-friendly cannabis testing kit designed to measure THC and CBD levels in flowers, extracts, and liquids.
Whether you’re a casual cannabis consumer, medical user, or a grower looking to ensure the quality of your harvest, this weed tester kit empowers you to make informed decisions about your cannabis use.
Why Test Cannabis Potency?
In today’s rapidly evolving cannabis world, potency matters more than ever. With new strains boasting higher THC levels and varying CBD content, it’s easy to feel unsure about what you’re consuming. This uncertainty can lead to inconsistent effects or even unpleasant experiences, especially for medical cannabis users who rely on precise dosing.
The THC/CBD QTest takes the guesswork out of the equation, providing accurate and reliable results for a safer, more consistent cannabis experience. Whether you’re testing flower, extracts, or liquids, this cannabis potency testing kit ensures you always know what’s the content of THC and CBD in your cannabis.
Developed for Home-use
- Developed for Home Use: Get accurate cannabis testing in the comfort of your own home—no lab required. Compare your own strains!
- Rapid Results: Quickly know the THC and CBD potency of your cannabis for informed decisions.
- Minimal Sample: Use just a small sample to test your entire batch—efficient and cost-effective.
- User-Friendly: Easy to use for beginners and experienced testers alike.
- University-Validated: Trust a scientifically proven method for reliable, accurate results.
Simple 3-Step Process to Measure Cannabis Potency
Knowing the cannabis potency of your flower is essential for both recreational and medical users. Whether you're a grower, medical user, or simply curious about your cannabis' strength, the THC/CBD QTest makes testing simple and reliable. With its easy 3-step process, you can accurately measure the THC and CBD levels in your cannabis in just minutes:
- Step 1: Preparation – Grind your cannabis flower and prepare a small sample for testing.
- Step 2: CBD Detection – Use the green-capped vial for CBD extraction and measure CBD concentration.
- Step 3: THC Detection – Use the glass vial to detect and measure THC potency in your sample.
How the THC/CBD QTest Measures the Potency of Your Cannabis
Are you curious about the exact THC and CBD levels in your cannabis? With the THC/CBD QTest, you can easily and quickly measure the potency of your cannabis in just two simple steps.
- CBD concentration: The plastic vial with a green cap is designed to determine the precise CBD levels in your sample, perfect for medical use or full-spectrum CBD analysis.
- THC concentration: The small glass vial accurately measures the THC content in your cannabis.
- Simple, fast process: CBD determination and THC extraction are completed in one easy step, providing you with reliable results in minutes.
With this easy-to-use, scientifically validated test, you’ll always know exactly what’s in your cannabis – helping you make informed decisions for medical use or cultivation.
Quantification of CBD in Cannabis – Understand Your Potency
The THC/CBD QTest provides a fast and reliable way to measure the CBD potency in your cannabis. Using the plastic vial with the green cap, you can easily detect the CBD concentration in various strains. Here's how the test results vary for different cannabis strains:
- White Widow: No detectable CBD.
- Girl Scout Cookies & Gorilla Glue #4: Slight color change, minimal CBD.
- Amnesia Haze: Slightly higher CBD, turning the vial slight purple (0.1% CBD)
- "Real CBD Strain": Deep purple vial, indicating high CBD levels. (2,5 % CBD)
The THC/CBD QTest allows you to easily and accurately measure the CBD potency of your cannabis in just one simple step. Whether you're looking for medical benefits or testing your cannabis for quality, this reliable and scientifically validated test will give you quick, clear results in minutes.
THC Potency Measurement Across 5 Cannabis Strains
Knowing the THC potency of your cannabis is essential for both medical users and recreational consumers. The THC/CBD QTest offers a simple, reliable way to measure THC levels and make informed decisions about your cannabis. Here's how the THC content compares across five popular strains:
- Girl Scout Cookies & Amnesia Haze: Both strains show high THC levels (15-20%), providing a potent experience.
- White Widow: Displays moderate THC levels, delivering a balanced effect.
- Gorilla Glue: Has the lowest detectable THC, offering no psychoactive effects.
- CBD Strain: Also shows no THC, perfect for those seeking pure CBD without psychoactive effects.
With the THC/CBD QTest, you’ll quickly know the THC potency of your cannabis, helping you choose the right strain for your needs.
What is inside the TCH/CBD QTest Kit
- Box with label
- Evaluation scale with quick-reference guide
- Detailed instructions
- Small glass vial with dry crystallin detection solution for THC
- Plastic dropper with detection solution for CBD
- Plastic blister with developer
Analyze THC and CBD Potency in 3 easy steps
Preparation
Chop your sample and weigh 20 mg (0.02 g). Add the material to the plastic dropper and shake for 20 seconds.
CBD Detection
Wait 10 minutes and check if CBD is present. If yes, compare the color intensity, with the color scale.
THC Detection
Add 10 drops from the dropper and 5 drops from the blister to the glass vial. Shake gently and evaluate the THC concentration.
CASE REPORT
Case Report – Synthetic Cannabinoids Detected in Cannabis Sample through Our Potency Test
As part of the ALIVE Drugchecking project, a person who had purchased what they believed to be THC-containing cannabis came to us after experiencing a life-threatening emergency. The individual suffered a severe medical crisis, including unconsciousness, after using the cannabis. Surprised by the strong effects, they sought to understand what went wrong.
When we tested the sample with the THC/CBD QTest, we found that the cannabis contained very little THC, which led us to suspect it was actually a CBD strain. The cannabis flowers appeared genuine, but the unexpected intensity of the effects suggested that something else was at play.
Further investigation revealed that the cannabis had likely been sprayed with synthetic cannabinoids. This was confirmed when our synthetic cannabinoid antibody test came back positive for PINACA derivatives, showing the presence of synthetic cannabinoids. The sample was sent for lab analysis, which confirmed the presence of these harmful substances.
An official warning was issued as part of the ALIVE Drugchecking project, and the results were distributed nationwide, alerting the public to the dangers of synthetic cannabinoids in cannabis. The THC/CBD QTest played a crucial role in identifying the issue early, potentially saving lives and contributing to significant harm reduction efforts across Germany.
The sample showed 1% THC and 1% CBD, too low THC for being the reason for the medical crisis
The "CBD" Cannabis strain flower which was suspected to be sprayed with syn. cannabinoids
The offical warning after confirmation and structural analysis of the ADB-BINACA and other derivates
Empower Safer Choices
ARE YOU CONVINCED?
buy a qtest now and finance new research
Order your THC/CBD QTest now and directly contribute to new research and development of new QTest kits.
With every purchase in our webshop, you’re supporting a small independent university start up and advancing harm reduction efforts and psychedelic research. Our mission is to empower everyone to make informed, self-determined decisions with trustworthy, lab-grade test kits.
Frequently asked questions about the THC/CBD QTest
For the determination of dried plant material, you only need 0.02 g (20 mg) of starting material.
Yes! The test independently detects THC and CBD concentrations through separate color reactions, giving you accurate results for both cannabinoids.
The kit contains everything you need to perform the test, except a precision scale for measuring small amounts of material or liquid drops. We recommend using a digital precision scale for the most accurate results. You can get one in our webshop.
The answer is yes! The THC/CBD QTest can be used for both plant material and extracts to determine the concentration. However, please keep in mind that extracts are more concentrated, so you will need to adjust the amount of starting material accordingly. Please refer to the next Q&A for more details.
Testing Extracts (More Concentrated Samples)
Extracts are significantly more concentrated than plant material. To ensure the test results still fits with the scale from evaluation card, reduce the amount of starting material. After you finish the QTest, multiply the result by the appropriate factor based on the reduced starting material. For example, if you used half the recommended amount (10 mg), double the final reading to determine the actual THC concentration. Here are some recommendations:
- For medium-concentration extracts: Use 10 mg of material and multiply by 2 the end result. The evaluation card will show results ranging from 0% to 50% THC.
- For highly concentrated extracts: Use 5 mg of material and multiply by 4 the end result. The evaluation card will show results ranging from 0% to 100% THC.
Yes! The THC/CBD QTest can be used for liquids and olis. Please follow the instructions below before starting the test.
Testing liquids or oils requires using the enclosed pipette and calculating the weight of the drops for accurate results. Here’s how:
Use the enclosed pipette to test liquid samples. Typically, even high-THC vape products do not exceed 30% THC on average. If you believe the sample is highly concentrated (around 30% THC), we recommend using 1 drop for the test. For samples with lower concentrations, you can use 2–3 drops instead.
The evaluation color scale is calibrated for a 20 mg sample, which shows the corresponding THC percentage. Since you are testing a liquid, you will need a reference weight to calculate the final result. Here’s how to do it:
Measure the weight of your sample drops:
- Fill the pipette with your liquid sample.
- Weigh the vial containing the liquid on a precision scale and note the weight (initial weight).
- Dispense the drops you plan to use for the test back into the vial.
- Weigh the vial again and note the new weight (final weight).
Calculate the drop weight:
- Subtract the final weight from the initial weight to determine the total weight of the drops you used.
- Alternatively, you can measure the weight of multiple drops and divide the total by the number of drops to calculate the weight of a single drop.
Perform the test as described:
- Use the measured drop weight as your reference to calculate the THC concentration.
- Follow the example provided in Section 4: “Evaluating the Result” to calculate the concentration for your liquid sample.
For extracts, depending on the THC concentration, only half (10 mg) or a quarter (5 mg) of the actual sample should be used and then multiply the end result accordingly.
Sample Calculations for Extracts and Liquids
For Extracts:
- 10 mg of extract used: Multiply the result from the color chart by 2.
Example: If the chart shows 25% THC, the actual THC content is 25% × 2 = 50%. - 5 mg of extract used: Multiply the result from the color chart by 4.
Example: If the chart shows 25% THC, the actual THC content is 25% × 4 = 100%.
For Liquids or Oils:
1 drop of oil tested, weighing 20 mg: The result can be read directly from the color chart.
Example: If the chart shows 15% THC, the actual THC content is 15%.
2 drops of oil tested, weighing 50 mg: Adjust the result to account for the weight difference.
Example:
- The color chart shows 20% THC.
- First, calculate the weight ratio: 50 mg ÷ 20 mg = 2.5.
- Then adjust the THC content: 20% ÷ 2.5 = 8% THC in the entire sample.
No, the THC/CBD QTest is specifically calibrated to measure THC and CBD potency. It does not detect other cannabinoids like CBG, CBN, or CBC.
The THC/CBD QTest is a single-use test designed to provide accurate results for one sample. For additional samples, you’ll need a new test kit.
Store the reagents at room temperature (77°F / 25 °C) out of direct sunlight for a shelf life of at least 18 months. If possible: it is best to store chemical reagents chilled in the refrigerator.
About the author
Dr. Felix Blei – Scientific Author
Dr. Felix Blei is the CEO and Founder of miraculix Lab, and a Postdoctoral Researcher at the Friedrich Schiller University Jena. With a PhD (Dr. rer. nat.) in Microbiology and a strong background in natural product biosynthesis, he is internationally recognized for his pioneering work on psychoactive fungi—particularly the biosynthesis of psilocybin and related compounds (Blei, F., 2020).
During his doctoral research at the Institute of Pharmaceutical Microbiology under Prof. Dirk Hoffmeister, Dr. Blei was the first to elucidate the full biosynthetic pathway of psilocybin in Psilocybe mushrooms (Fricke, Blei et al., 2017) Angewandte Chemie. He further developed an in vitro system capable of producing psilocybin, serotonin, and novel non-natural analogues (Blei et al., 2018) Chemistry- A European Journal . His discovery of naturally occurring β-carbolines in Psilocybe—compounds that may synergistically enhance psilocybin's neurotropic effects—led to the concept of “psilohuasca,” a naturally occurring combination of MAO inhibitors and psychedelics in fungi (Blei, Dörner et al. 2020) Chemistry–A European Journal.
Building on his academic expertise, Dr. Blei developed the first reliable rapid tests for psilocybin, which laid the foundation for the spin-off company miraculix. Today, miraculix provides quantitative drug checking tools that are used throughout Germany and Europe. He also leads the German ALIVE project—an evidence-based drug checking Initiative funded by state governments, offering mobile substance analysis and harm reduction at music festivals and public events.
With over 500 citations, numerous publications in high-impact journals, and a passion for accessible science, Dr. Blei bridges cutting-edge research with real-world application. His work contributes to safer substance use, public health strategies, and a deeper understanding of natural psychoactive compounds.
You can learn more about him on LinkedIn or read his publications on Researchgate
