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TestKitPlus - Cocaine Purity Test Kit

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Pickup available at 1597 Haight Street

Usually ready in 24 hours

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1597 Haight Street

Pickup available, usually ready in 24 hours

1597 Haight Street
San Francisco CA 94117
United States


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Cocaine Purity Test Kit Description

Use the Cocaine Purity Test Kit to get a good idea about the purity of your cocaine. It requires a small sample (you only need 20 mg of cocaine).

Simply compare the test result with the color chart included with the kit to get a good idea about how pure your cocaine sample is.

Cocaine Purity Test Color Chart
Cocaine Purity Test Color Chart

Image of the Difference in Purity of Cocaine Samples

The results from the tests done above can be read as follows:

  1. The first ampoule (where the bottom layer is almost like coffee) was a 90% pure sample and is worth 5 stars.
  2. The second ampoule was a 70% pure sample and gets 4 stars.
  3. The third ampoule was a 60% pure sample and gets 3 to 4 stars.
  4. The fourth ampoule was a 50% pure sample (very common to find on the streets) and tests between 2 and 3 stars.
  5. The last ampoule has almost no cocaine in it. It does not reach one star purity (it was a 10% pure sample).

No brown color at all means little to no cocaine: less than 10%.

This cocaine purity test is very insensitive to the usual substitutes such as mannitol, which won’t skew the purity reading. The test will also not react to other substances from the family of cocaine such as lidocaine, benzocaine, procaine, etc.



Please use only 20 mg (a small amount) of your sample. If you use too much, the results will be skewed! When comparing different samples, test using the same quantity from each. You can use the materials that come with the kit to help you get the right amount. However, for best results, use a scale to weigh the exact amount of powder. You can buy a good portable digital scale from here:

Digital milligram scale »


Test samples from different sources at the same time, so that you can more easily compare results. Take pictures of the test results under the same lighting and with the same camera. Use the pictures to compare with results from future tests.

Cocaine Purity Testing FAQ

How accurate are the test results?

Following the instructions precisely will let you get the best result. It’s important to use a 20 mg sample without any lumps or “rocks”. You should be able to get a reading within about ±10%.

Can cuts affect the results?

Many common cocaine cuts won’t skew the results. That being said, we cannot guarantee that there aren’t any substances that might cause issues. To get an idea of what your sample might be cut with, we recommend testing with our Cocaine Cuts Test Kit.

We also suggest our Liebermann test. It can screen for other common cuts like amphetamines, lidocaine, and levamisole.

Does the Cocaine Purity Test check for fentanyl in my Sample?

No. To test for fentanyl, we recommend our forensic fentanyl test kit, or getting some fentanyl test strips. We highly recommend testing your cocaine for fentanyl. Fentanyl in cocaine has resulted in thousands of deaths within North America.

How many cocaine purity tests do I get with this kit?

There are three options to choose from.

  • The “1 Single Test” includes one cocaine purity tester with everything you need to perform one test.
  • The “10 Tests in 1 Box” option includes 10 cocaine purity testers packaged in a single box.
  • If you’re planning on distributing single tests to friends or reselling them to customers, we recommend selecting the “10 Tests Packaged Individually” option. You’d get 10 cocaine purity testers packaged as 10 separate kits.



No drug (whether legal or illegal) is completely safe, we recommend avoiding all recreational drug use.