FAQ What is the best test kit?

  • PRO Test kits help identify a substance and estimate it’s purity using just a tiny sample.

    We offer both qualitative and semi-quantitative presumptive substance analysis test kits for MDMA, LSD, THC and 550+ other substances. Most of PRO Tests consist of colorimetric reagents similar to those used by the police, simple chemicals that change color upon contact with even trace amount of another substance. Most of purity PRO Tests are calibrated TLC (Thin Layer Chromatography) kits. All PRO Tests are non-medical products, with the exception of repurposed fentanyl test strips.


    Those are the single-use / multi-use tests for PRESENCE of a substance, but not PURITY or QUANTITY. They can:

    1) Detect presence of a substance and confirm if it is not present at all
    2) Detect certain adulterants even if the expected substance is also present

    Most of those are colorimetric reagent tests. They can only detect an adulterant if it produces a more vibrant color than the expected substance and are prone to false positives. That’s why it’s important to use more than 1 reagent to increase analysis precision. Fentanyl tests strips on the other hand, if used correctly, can detect fentanyl even in the presence of other compounds.

    All of the individual qualitative tests that we offer are: Cannabis, Ehrlich, Froehde, Hofmann, Mandelin, Marquis, Mecke, Liebermann, pH test, Robadope, Scott, Simon’s, Zimmermann, TLC cannabis dye and fentanyl test strips.


    These are the multiple-use tests to estimate PURITY and QUANTITY. They come in 2 types:

    1) Quantity / potency reagent tests do not directly detect any adulterants. We offer the THC/CBD reagent tests of this kind for either THC or CBD dominant samples. It reveals whether THC or CBD is the main ingredient and can help estimate the amount as well.
    2) TLC purity tests can separate a sample into different substances and then help estimate quantity. TLC tests don’t identify substances alone (unless you have an already confirmed reference sample) and work best paired with 1-2 reagent tests. At the moment you can precisly estimate amount of MDMA, THC, CBD, and discover the main ingredient of 550+ other substances.

  • If you are a new to drug checking we recommend one of our tailored per substance single-use kits (3.85€ per test with FREE worldwide delivery) or multiple-use sets (about 20€ for 100 uses of several different reagents).

    If you want to compare reagents, see the list below. Reagents can be divided into primary and secondary. Primary reagents react with the expected substance while secondary produce a vibrant color change with an adulterant. Most reagents are pretty universal, here are a few key notes:

    • Cannabis – primary test for THC / CBD, detects whichever is the main present cannabinoid
    • Ehrlich – primary test for all indoles, e.g. lysergamides and tryptamines but also 5-HTP and more, secondary test for cocaine
    • Hofmann – primary test for lysergamides and tryptamines, more precise but slower than Ehrlich
    • Froehde – primary test for most powders, secondary test for ketamine and amphetamines, long shelf life
    • Liebermann – primary test for most powders, secondary test for cocaine (detects levamisole)
    • Marquis – primary test for most powders, secondary test for ketamine, mephedrone and psychedelics
    • Mecke – primary test for most powders, secondary test for cocaine, ketamine and mephedrone, short shelf life
    • Mandelin – primary test for ketamine, amphetamine, MDMA and more, secondary test for amphetamines; yellow; short shelf life
    • pH test – check how corrosive is your substance
    • Robadope – primary test for primary amines, e.g. MDA, amphetamine or PMA
    • Simon – primary test for secondary amines, e.g. MDMA, meth, mephedrone, methylone or PMMA
    • Scott – primary test for cocaine, can’t be used alone because turns blue with all -kaines
    • Zimmermann – primary test for cathinones and some benzodiazepines, doesn’t detect alprazolam

    Fentanyl Test Strip to detect fentanyl, even if it is mixed in another substance.

    To detect adulterants with reagents there are a few options:

    • To detect adulterants in a secondary amine (e.g. MDMA, methamphetamine, MMC) use reagents:
      • Robadope (for primary amines, e.g. 2C-x, MDA, amphetamine or PMA)
      • Zimmermann (for secondary and tertiary cathinones, e.g. a-PVP, 4-MMC and derivatives)
    • To detect adulterants in a primary amine (like 2C-B, amphetamine or MDA) use reagent tests:
      • Simon’s (for secondary amines, e.g. MDMA, meth, mephedrone, methylone or PMMA)
      • Zimmermann (for secondary and tertiary cathinones, e.g. a-PVP, 4-MMC and derivatives)
    • To detect PMA/PMMA in meth/amphetamine, use Mandelin reagent
    • To detect levamisole, ephedrine or amphetamine in cocaine, use Marquis and Liebermann reagents

    To discover all adulterants and quantity pair reagents with a TLC Purity Test Kit. TLC tests enable you to separate sample into different substances and estimate quantity. Purity tests alone don’t identify substances and are best paired with 1-2 reagent tests.

    To test cannabis, we recommend using the TLC Cannabinoid PRO Test. It doesn’t require additional reagents if you know whether your substance is THC or CBD dominant, and shows all cannabinoids present and their ratios.

List of all PRO Test guides how to test drugs:

How to test 2C-B?
How to test MDA?
How to test MDMA?
How to test LSD?
How to test DMT?
How to test FENTANTYL?
How to test COCAINE?
How to test KETAMINE?
How to test MEPHEDRONE?
How to test AMPHETAMINE?
How to test HEROIN (opioids)?
How to test THC and CBD?

and how to detect cuts or other adulterants:

How to detect LEVAMISOLE?
How to detect PMA/PMMA?
How to detect FENTANYL?
How to detect NBOMes?


A positive reaction does not indicate if the substance is safe. Remember to avoid mixing with other drugs, take care of yourself and take breaks. Ketamine can be habit forming and is known to cause bladder damage in those cases, therefore regular use can be particularly dangerous. Learn more at erowid.org.