How to test DMT?

How to test DMT: reduce risk by using a DMT test kit to check it for adulterants. Pure DMT is usually white, brown or tan and can’t be identified by appearence. To test DMT use reagent tests Ehrlich, Hofmann, Marquis and Mecke in single-use or multiple-use test kits. Reagent tests are simple chemicals that indicate presence of a substance by reacting with different color change to different substances. To test you need just 1 drop of a reagent and a small sample, about this big -> To detect all ingredients and estimate potency it’s required to use an additional TLC purity test kitTo detect fentanyl or test for fentanyl analogs use the fentanyl test strips.

Reagents presumptively indicate PRESENCE, but not PURITY or QUANTITY. Use different reagent tests to improve accuracy and to detect adulterants – 90% of adulterants will react with 1 out of 3 tests and 95% with 1 out of 5. To detect all ingredients and estimate potency it’s required to use an additional purity test kitA positive or negative test result does not indicate if the substance is safe. No substance is 100% safe.

How can I test DMT?

Short instructions:

BEFORE using a DMT test kit
  • it’s RECOMMENDED to record the reaction to compare later.
DMT testing instructions
  • Take a (small) piece of your powder, about this big -> ●.
  • 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 Ehrlich reagent test (or other supplied) on the sample and wait for the results.
  • Check reagent test results with instructions below.
  • Consider using the TLC DMT Purity Test Kit to double check possible adulterants and estimate potency.
AFTER using a DMT test kit
  • OPTIONAL: Pour baking soda over a finished reaction to neutralize used reagents.
  • Wash testing surface under running water

For full instructions scroll further down below.

VIDEO & RESULTS Watch how to test DMT

TL;DR: Below is an image with a quick cheat sheet how to use the DMT test kit and further down you can check out more detailed guide how to test DMT. Use the DMT reagent test results chart to see how to use Ehrlich reagent, Hofmann, Marquis and Mecke to test DMT and what are the expected results.

All DMT test results:

MARQUIS Orange > Brown
MECKE Yellow > Dark green
MANDELIN Orange / Brown
EHRLICH Pink > Purple > Blue
SIMON’S No blue color change
ROBADOPE No pink color change
SCOTT No full color change


DMT test did not react as expected? Watch out!
All test results are available in our instructions and the TestDrugs app.

STEP ONE How to identify DMT?

What test kit do I need to test DMT?

DMT / tryptamines

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. Here are a few key notes:

  • Ehrlich – primary test for all indoles, e.g. tryptamines and lysergamides but also 5-HTP and more
  • Hofmann – primary test for tryptamines and lysergamides, more precise but slower than Ehrlich
  • Marquis – primary test for most powders, secondary test for blotters, cocaine, ketamine and mephedrone, 
  • Mecke – primary test for most powders, secondary test for blotters, ketamine, mephedrone; short shelf life, 

Ehrlich reagent is the main test for DMT and produces a strong pink/purple color change with all indoles, such as DMT or LSD. Hofmann reagent is the recommended follow up primary test to narrow it down and confirm the presence of DMT over 5-MeO-DMT or 5-HTP. Marquis, Mecke or other reagent tests are useful for an even further confirmation.

Hofmann and Ehrlich reagent tests for LSD

DMT reagent tests results for Ehrlich, Hofmann, Marquis and Mecke

How to use a DMT test kit?
  • Check test results with Ehrlich test kit: if testing DMT the exact color of the reaction is not important – the test is of a yes/no type. It will go purple or pink if it is exposed to an indole compound like DMT or another tryptamine. 
  • Test as small sample as possible and only use more in case you are not getting a conclusive result.
  • NBOMe compounds and other phenethylamines (like 2C-B) will not give a colour change with the Ehrlich reagent.
  • When you rule out NBOMes using Ehrlich and Hofmann reagents, follow up with Marquis and Mecke to identify DMT.

STEP TWO How to test DMT purity?

If primary reagents did not react with your sample, try secondary reagents. Secondary reagents produce a vibrant color change with an adulterant, but not with the expected substance.

Secondary reagent tests:

Next choose a purity testing kit. It enables you to separate sample into different substances and estimate quantity, however still requires reagent tests to identify detected substances. To discover all adulterants and quantity pair reagents with a TLC (Thin Layer Chromatography) Purity Test Kit. Purity tests alone don’t identify substances and are best paired with 1-2 reagent tests.

TLC Purity Tests:
  • Qualitative: One spot indicates a pure substance. TLC test works by separating substances present in a sample in order to reagent test them individually. You can also use an already confirmed sample for reference – if both compounds show up at the same height on the TLC “card” that indicates they are the same substance.
  • Semi-quantitative: TLC also helps estimate quantity (potency). The bigger the size of the detected spot, the bigger the amount of measured substance. Note that different substances need different calibrated rulers.
TLC Purity Test potency scale

TLC Purity Test potency scale

  • To estimate DMT purity (number of ingredients and their concentration) use the Substance Purity Test Kit.
  • To precisly estimate MDMA purity use the MDMA Purity Test Kit, which in addition includes a calibrated plastic ruler.

For full TLC (Thin Layer Chromatography) instructions read our guide how to test drugs purity.

FENTANYL How to detect fentanyl?

What is fentanyl?

Fentanyl is an extremely potent and dangerous synthetic opioid, often mixed in street drugs and deadly.

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. One part of a baggie can be fentanyl free and another lethal.
How to test DMT?
How to test fentanyl powder / pills / spice with a fentanyl test strip?
  • Dissolve 100 mg in at least 125 ml of water (half a cup or at least 1 mg/ml).
  • Grab a test strip and insert the white end into the liquid, no higher than the thick 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.
  • Check test strip result: a single line confirms the presence of fentanyl, while two lines (even faint) rule it out.

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

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FAQ Frequently Asked Questions

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