Simply open the packaging, insert the liquid from the tube and add (EXACTLY) 20 Milligrams of your sample to this test. You will have your result within seconds.
The Test “Cocaine Purity” is insensitive to the usual cuts such as mannitol and it does not react with levamisole. It does not react to any other substances from the family of cocaine (lidocaine, procaine, etc), which are frequently used to fool the consumer who wants to taste the cocaine to assess the quality.
These other – “caines” will only produce a numbing effect (at best).
The Test cannot tell you anything about the identity of the substance that may have been used for cutting the sample.