How to Test Cocaine (Coke, Blow)

Cocaine can be identified and screened for cuts by using a combination of tests.

Identifying Cocaine

To help verify that your sample contains cocaine, we recommend using the following 2 tests:

  1. Cocaine identification test (Scott reagent): Turns blue when cocaine is present.
  2. Liebermann test: Turns yellow with pure cocaine.

Testing Cocaine Adulterants (Cuts)

Substances such as ephedrine, levamisole, and amphetamine are often mixed into cocaine.

  • The Marquis test is a useful for screening cocaine for (meth)amphetamines and cathinones (bath salts).
  • Other substances such as ephedrine, lidocaine, benzocaine, procaine and levamisole can be identified with the cocaine cuts test.
  • The Liebermann test is also a good test for levamisole. It can also rule out amphetamines in conjunction with the above Marquis test.

Fenatnyl is a dangerous opioid that can be detected with our fentanyl test kit

Testing Cocaine Purity

While the above method can determine the presence of cocaine and adulterants, it doesn’t indicate the proportion of cocaine in a sample. You may use a cocaine purity test to get an idea of how much of your sample is cocaine.

It works by using a specific amount of sample (20 mg), and observing the color change. The purer the cocaine sample, darker the color result.

Cocaine Purity Test Color Chart
Cocaine Purity Test Color Chart

For more information, please see our Cocaine Purity test »