How to test drugs: if you intend to use a synthetic psychoactive substance, first you need to check it first using a test kit. Most popular drug testing kits are colorimetric reagents, simple spot-tests which produce different color reactions with different compounds. It’s the same kind of tests as used by police. To detect fentanyl or it’s analogues it’s recommended to use fentanyl test strips.

Drug tests presumptively indicate PRESENCE, but not PURITY or QUANTITY. Use different tests to improve accuracy and detect adulterants – 90% of adulterants will react with 1 out of 3 reagents, and 95% with 1 out of 5.

Remember that using psychoactive substances is always risky. A positive or negative test result does not mean that the substance is safe. No substance is 100% safe.


How can I test drugs?

BEFORE using a test kit

  • It’s RECOMMENDED to record the reaction to compare later

STEP ONE for testing pills / capsules / powder / crystals

  • Take and finely crush a small piece, no bigger than a head of a needle – like this •.
  • Put it on a suitable testing plate, preferably a spot test plate or the bottom/underside of a ceramic mug (example). *If using single-use vials insert the sample and observe, as the reagent is already within.
  • Add one (or two) drops of Marquis reagent test on the sample and wait for the results.
  • Check reagent test results with instructions.

STEP TWO testing drugs for adulterants  

Choose the best drug checking test kit: to detect adulterants it’s best to use reagents that do not react with your main ingredient, but do react with the adulterants you want to rule out.

  • To detect MDMA adulterants you can use test kits Robadope (for 2C-x, amphetamine, MDA or PMA) and Zimmermann (for a-PVP and 4-MMC derivatives). They react to primary amines and secondary and tertiary cathinones, but not to MDMA. 
  • Full informations are available in instructions and color chartsvideos & apps

Read guides how to test drugs:

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 MESCALINE?
How to test KETAMINE?
How to test MEPHEDRONE?
How to test AMPHETAMINE?
How to test METHAMPHETAMINE?
How to test HEROIN & OPIOIDS?
How to test an UNKOWN substance or RCs?

and how to detect cuts or other adulterants:

How to detect LEVAMISOLE?
How to detect FENTANYL?
How to detect PMA/PMMA?
How to detect NBOMe?
How to detect 2C-B?

How to test drugs? Detect amphetamine / PMA / 2C-B in MDMA using the MDMA test kit with Marquis, Mecke, Robadope and Simon’s reagent tests.

Test did not react as indicated? Watch out!
All results are available in our instructions and TestDrugs apps.

AFTER using a reagent test

  • OPTIONAL: Pour baking soda over a finished reaction to neutralize used reagents.
  • Wash testing surface under running water.

FAQ

  • Fizzing. Any synthetic drug in a form of salt will bubble with most reagent tests, which are strong acids. If you see only fizzing instead of color change, that can indicate presence of a new psychoactive substance.
  • Speed of the reaction does not indicate quantity nor purity. However, if you are having trouble interpreting your result try using a bigger sample or crushing it better before testing.
  • How many tests can you get from one test kit? A multiple-use test kit lasts up to 100 (5 ml) or 200 (10 ml) tests. Each drop equals one test. A single use-test kit contains 2 disposable ampoules (2 tests).

How to check if reagent test works?

  • Use any substance and compare color reactions with instructions. It’s easiest to use aspirin – Marquis reagent reacts to it with a slow pink color change.
  • Keep a sample to compare later in case of doubt. If control sample reacts fine, it means the reagent still works.

How can I detect fentanyl?

BEFORE using a fentanyl test strip

  • It’s RECOMMENDED to test each and every dose. Because of extreme potency (microgram range) fentanyl is never evenly mixed in.

STEP ONE for testing fentanyl powder / pills / spice

  • Dissolve 100-200 mg in at least 125 ml of water (half a cup).
  • Grab a test strip by blue end and insert it into the liquid, no higher than the blue line.
  • Wait until liquid starts visibly moving up the test strip (up to 15 seconds).
  • Put the test strip away on a flat dry surface and read the result in 2 minutes.

How to use a fentanyl test strip?

  • Check test strip results: a single line confirms the presence of fentanyl, while two lines (even faint) rule it out.
Test Strip for testing Fentanyl
How to test fentanyl? Fentanyl Test Strips instructions

FAQ

  • Faint line. Even faint second line result is enough to rule out the presence of fentanyl.
  • Injecting. If you inject you especially need to test each and every dose. It’s best to test the spoon (or cooker) residue every time before use.
  • Speed of the reaction does not indicate quantity nor purity. However, if you are having trouble interpreting your result try using a bigger sample or crushing it better before testing.
  • How many tests can you get from one test kit? A single fentanyl test strip is enough for one test.

Fentanyl test did not react as indicated? Watch out!
All results are available in our instructions and TestDrugs apps.


Are you looking where to buy a test kit?


Single use test kits – 2.75-3.85 EUR per test, FREE SHIPPING

  • Amphetamines – MDMA, MDAI, 2C-x, meth/amphetamine, benzofurans, opioids
  • Ecstasy – MDMA, MDAI, 2C-x, meth/amphetamine, benzofurans, opioids
  • DMT – LSD, AL-LAD, DMT, 5-Meo-DMT, other lysergamides & tryptamines
  • LSD – LSD, AL-LAD, DMT, 5-Meo-DMT, other lysergamides & tryptamines
  • Cocaine – cocaine, cocaine cuts, MDMA, amphetamine, 2C-x, benzofurans, heroin
  • Ketamine – ketamine, MXE & other dissociatives, MDMA, meth/amphetamine, opioids
  • Heroin – opioids, MDMA, meth/amphetamine, ketamine, MXE & other dissociatives
  • Fentanyl – start at 1.3 eur per test, detects fentanyl analogues too

Multiple-use kits – start at 4.8 EUR, only cents per test

  • Amphetamines – best for meth/amphetamine, 2C-x, MDMA or MDA, but also good for benzofurans, cathinones and opioids
  • Ekstaza – best for MDMA and MDA, 2C-x or meth/amphetamine, but also good for benzofurans, cathinones and opioids
  • DMT – best for DMT or LSD but also good for all tryptamines and lysergamides
  • LSD – best for DMT or LSD but also good for all tryptamines and lysergamides
  • Cocaine – best for cocaine, 2C-B, MDxx, or meth/amphetamine, but also good for LSD, tryptamines and phenetylamines
  • Ketamine – best for ketamine and other dissociatives, but also good for meth/amphetamine, MDxx, cocaine and opioids
  • Mephedrone – best for cathinones, e.g. MMC, MDPV, a-PVP, but also good for 2C-B, benzofurans, MDxx and opioids
  • Heroin – best for heroin and other opioids, but also good for 2C-x, benzoforans and MDMA
  • Custom test kit – up to 5 test kits to choose with a discount
  • Full reagent test kit – by buying 11 reagents you save over 50%!

Multiple-use reagents separately – with a kit or without:

  • Marquis – basic test for all powders.
  • Mecke – basic test for all powders, short shelf life.
  • Mandelin – basic test for ketamine and amphetamine, yellow.
  • Liebermann – basic test for cocaine (detects levamisole).
  • Froehde – basic test, long shelf life.
  • Ehrlich – basic test for lysergamides and tryptamines.
  • Hofmann – basic test for lysergamides and tryptamines.
  • Robadope – secondary test for 2C-x / MDA / amphetamine / PMA.
  • Simon – secondary test for MMC / MDMA / methamphetamine / PMMA.
  • Scott – basic test for cocaine, can’t be used alone.
  • Zimmermann – basic test for cathinones and benzodiazepines.

How to test drugs? Instructions how to use reagent test kits.

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