Cannabis QTest


Know Your Dose! With our Cannabis QTest, you can quickly and easily determine the amount of THC and CBD in cannabis (flower or buds). Results are given as a percentage by weight.

  • Results in 10 minutes.
  • Only 20 mg of starting material required.
  • Easy evaluation with the enclosed color chart.

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Get 20% off when you buy five or more QTests.

Additional information

Weight 1.8 oz


Know Your Dose with the Cannabis QTest

The Cannabis QTest is a single-use cannabis test kit that can quickly and easily tell you the percentage of THC and CBD in cannabis flower or buds.

You can test as much cannabis as you like, but you need to finely chop and mix it first (or grind it up in a coffee grinder). After you homogenize your material this way, the result of your test will then apply to the all rest of your cannabis.

Simply follow the instructions and compare the color of the detection vial to the enclosed color chart.

cannabis qtest cannabis test kit

It’s that simple.



Note: A paper version of these instructions comes with your order.


• Use this kit at room temperature. (If stored in a refrigerator, let it warm up for one hour first.)
• Perform the test on a flat surface during the daytime.
• Evaluate the result in daylight immediately after the 10-minute development time. (The color can change if you wait too long.)
• Use a white, letter-sized sheet of paper as a background when evaluating the color. (See section four for evaluation details.)
• Read all the instructions at least once through before beginning the test.


This test kit can be used to detect the concentration of active ingredients THC and CBD in cannabis flower. The kit will not work with concentrated extracts, gummies, chocolates, brownies or other edibles.


Take out all the items from your kit. Along with these instructions, you should have:

• protective gloves
• plastic dropper bottle with green cap (for determining CBD concentration)
• glass vial with red lid containing dry crystals (for determining THC concentration)
• plastic blister with twist-and-tear-off tip containing developer solution

You will also need a milligram scale and either a small funnel or a creased piece of paper to carefully pour the flower material into the plastic extraction bottle. (You can make your own paper funnel. Google it!)

Note: If you are testing cannabis flower (buds), you need to homogenize the material before you perform the test. A coffee grinder works best. If you do not have a coffee grinder then you can chop your material finely on a cutting board using a sharp knife. Then mix the chopped material thoroughly.

You will be using 20 milligrams (mg) of material for the test. The result will tell you the percentage of THC and CBD in all the remaining cannabis that you honogenized.


3.1 First put on the enclosed nitrile gloves and wear appropriate protective clothing and safety glasses. If you wear contact lenses, remove them. The ingredients contain acids which may cause skin irritation or severe eye damage. In the event you come in contact with the ingredients (liquid or dry), remove the affected clothing immediately and rinse the affected skin area with water for several minutes. In case of eye contact, rinse the affected eye with running water for several minutes. (Keep pets, especially cats, away from the testing area.)

3.2 Carefully weigh 20 mg (0.20 g) of your homogenized cannabis using a milligram scale.

3.3 To determine the concentration of CBD in your sample, open the plastic dropper bottle with the green cap (by turning the white part of the cap). Carefully pour the 20 mg of homogenized cannabis flower (or the proportionally lesser amount of concentrated extract) into the bottle using a funnel or a creased piece of paper, then put the lid back on and close it tightly.

Next, shake the bottle well for about 12 to 20 seconds, then set it down to rest for 10 minutes. During the resting period, repeat the shaking process two more times; once at about the 3-minute mark, and again at about the 7-minute mark. Each time you set the bottle down to rest, make sure the cannabis material remains inside the liquid. (If you see material stuck in the upper section of the bottle, one or two quick shakes with the bottle in a vertical position will usually rinse it all back down.)

After 10 minutes, evaluate the results immediately. If CBD is present, the detection liquid will be a shade of purple. Use the left side of the enclosed color chart to determine the CBD content. For details, see section 4 below, “EVALUATING THE RESULT.” Then come back to this section to perform the THC part of the test.

IMPORTANT! – Evaluate the CBD content immediately after the 10-minute mark. You have about three minutes. The liquid will continue to change color after this time and falsify the result.

3.4 To determine the concentration of THC in your sample, open the small glass vial with the red lid. Then remove the green cap from the plastic dropper bottle you just used (not the white part this time, just the green tip) and add 10 drops to the vial. Next you are going to twist and tear off the top of the plastic blister (to open it) and add 5 drops of the liquid into the vial also.

IMPORTANT – Before you open the blister, make sure the liquid inside is congregated at the bottom. Otherwise it can spill out when you tear it open. If you see liquid near the top (near the tear point), just shake it a little or tap it on a table so the liquid drops down to the bottom. Then it is safe to twist and tear off the top.

After adding five drops of liquid from the blister, put the red lid back on the glass vial and close it tightly, then gently move the vial from side to side to mix the ingredients.

3.5 The liquid in the glass vial will change color almost immediately (within 10 seconds). Use the right side of the enclosed color chart to determine the THC content of your material. See section 4 below for details.


Follow the instructions above before evaluating the result.


The detection reagent in the plastic dropper bottle will not change color in the presence of THC, but only in the presence of CBD. Use the left side of the color chart and the “SPECIFIC EVALUATION INSTRUCTIONS” below to determine the concentration.


If there is THC in the material, the liquid in the small vial will turn purple. Use the right side of the color chart and the “SPECIFIC EVALUATION INSTRUCTIONS” below to determine the concentration.

If there is no THC but there is CBD, the liquid in the small vial will turn orange.

If there is neither THC nor CBD, the liquid in the small vial won’t change color (or will turn slightly gray).


By comparing the intensity or saturation of the liquid in the vial with the enclosed color chart, you can determine the result visually. Daytime sunlight is best suited for optimal evaluation. If using artificial light, the influence of different color temperatures may slightly change the hue. You can still perform the evaluation, but you should take this into account (e.g. high blue content in energy-saving lamps, green discoloration when using LED light from cell phones, etc).

• Use a white, letter-sized sheet of paper as a background.
• In daylight or under bright light, hold the glass vial next to the color chart about six to eight inches in front of the white sheet of paper and look through the glass vial head on. For best results, your eyes should be fairly close to the vial, but no closer than about six to eight inches.
• Now compare the color of the liquid in the vial to the color chart. The corresponding concentration of THC and CBD is listed as a percentage.

• This concentration applies to your remaining homogenized cannabis.

• Do not evaluate the liquid after four hours. At this time the color may no longer be reliable.


Store the reagents in the refrigerator (35° – 46° F) and out of direct sunlight for a shelf life of at least 18 months.


• Keep the kit away from children and animals.
• When performing the test, wear suitable protective gloves, clothing and face/eye protection. If you wear contact lenses, remove them before using the test kit.
• The liquids contained in the test kit consist of various acids which may cause a corrosive/irritating effect on the skin or severe eye damage/irritation. Avoid contact with the skin, eyes, mouth or clothing.
• Should contact with the above listed areas occur, remove the relevant clothing immediately. Instantly rinse the affected skin areas with water for several minutes. In case of contact with the eyes, immediately rinse them with water for several minutes using both hands to keep the upper and lower eyelids open.
• Substances processed with the test kit are not to be consumed!


• QTests are only to be used for the detection and quantification of unknown substances.
• The result may not be 100% accurate. Your sample could be adulterated with one or more unknown substances that cross-react with the reagents, affecting the quantitative result.
• The result does not mean your sample is safe to consume. It could still contain unwanted substances and impurities that can be harmful or even deadly.
• The Cannabis QTest is not a substitute for laboratory analysis.
• miraculix and/or assume no responsibility for the use or misuse of the test kit or the results.


Check your local regulations for proper disposal of acids.