Marquis Reagent - Ecstasy / MDMA / Molly Test Kit

  • $25.99
3 review(s)


Please Note: this product has been phased out, and will not be restocked.

The Marquis reagent does presumptive tests for the presence of MDxx (ecstasy, molly, mdma), cathinones (bath salts), DXM, 2C-B, meth/amphetamine and more. Contains enough reagent for approximately 50 tests.

Please read the information in the full description below before purchasing and using.


The Marquis reagent does presumptive tests for the presence of MDxx (ecstasy, molly, mdma), cathinones (bath salts), DXM, 2C-B, meth/amphetamine and more. Contains enough reagent for approximately 50 tests.

The Marquis Reagent is a mixture of concentrated sulfuric acid and formaldehyde. Marquis Reagent does not differentiate between MDMA and MDA and simply confirms an MDx compound.

Testing Instructions

IMPORTANT: Never have more than one reagent bottle open at a time. If you mix up the caps and put the wrong cap on the wrong reagent bottle, this may cross-contaminate the reagents and ruin them.

Instructions are also included inside the packaging for the reagent. Be sure to perform the tests in a well-lit location.

  1. Scrape a tiny bit of your pill or powder onto a large, white ceramic plate. Use just enough powder to see on the plate.
  2. Take the reagent bottle out of the plastic safety container. Remove the cap and turn the bottle upside-down a couple inches over the powder. Squeeze one drop out of the bottle onto the powder. Be careful to not let the dropper bottle touch your powder or you will contaminate and ruin the rest of the reagent. Replace the cap.
  3. Observe the color change right away. Use the Marquis column of the color chart included with your kit (see below as well for a copy) to evaluate your test.

If the reagent either does not change any color during the first 30 seconds or if it produces some other color-change sequence, then the pill definitely does not contain any of the above substances. It may also be highly adulterated with one or more unknown substances. You can use other DanceSafe reagents on new scrapings/samples to look for the presence of other substances. Wash the testing surfaces with soap and water as soon as possible.

Color reactions:

  • MDxx – Purple to black
  • Meth/amphetamine – Orange
  • DXM – Grey to black (slowly)
  • MDPV, Methylone, Butylone – Yellow
  • 2C-B – Yellow to green over 30 seconds
  • 2C-T-x – Orange to salmon
  • BZP – No color change, fizzes

The color reactions for MDMA, MDA, and MDE are the same purple to black. Methamphetamine and amphetamine are the same orange. MDPV, methylone and butylone are the same yellow. You can then use the Simon’s Reagent to tell the difference between MDA and MDMA/MDE, or between methamphetamine and amphetamine or between MDPV and methylone/butylone.

Storage and Handling Instructions

The Marquis Reagent is primarily sulphuric acid and is strong enough to burn skin and clothing. Keep out of eyes and mouth. Wear latex gloves when handling the bottle and cap. If you get some on you, then wash quickly with soap and water. Wash testing surfaces with soap and water as well. Dispose of any unwanted reagent down the sink with running water and baking soda. Store all testing kits in a cold, dark place (like your freezer) between uses.

NOTE: Marquis Reagent can only determine the PRESENCE, not QUANTITY or PURITY, of a particular substance. Dark color reactions will tend to override reactions to other substances also in the pill.

A positive or negative reaction for a substance does not indicate that a drug is safe. No drug use is 100% safe.

Drug Testing Kits Chart

Frequently Asked Questions

What are the known limitations of these kits?
The drug test kits by dancesafe are presumptive tests. This presumptive home drug checking, also known as pill testing or adulterant screening, is just a harm reduction service, and may not provide 100% accurate results.
A specific reagent in a kit will only check for presence of a specific substance or set of substances that it can test for, but will not indicate presence of other substances that this reagent is not designed to check. The reagent test can not indicate the quantity and purity level.
The instructions and color codes are also subjective, and may cause confusion and inaccuracy in reading the results.

How are the packages shipped?
All packages are shipped in a non-branded discreet packaging. Each package includes the instruction cards, in addition to the reagent.

I have questions before I purchase or I need further help with Testing!
Please visit the DanceSafe website for detailed instructions (, or contact their support for any help (


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