ID-Test : GBL identification test

GBL substance identification test

NarcoCheck NarcoCheck


Identifies the GBL in seconds on liquids. Very simple to use and very reliable. A blue color indicates the presence of GBL. Shipping in 24H.

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The NarcoCheck® ID-Test® GBL is used for the identification of Gamma-Butyrolactone (GBL) in liquid form.

Very simple to use, this test is based on a wet chemical reaction.

Simply add a small amount of the substance to be identified, and the granules in the ampoule will change color. Then compare the color of the ampoule with the colorimetric chart included in the instructions.


Before running the test, the ampoule is pinkish in appearance.

After running the test:

  • If the ampoule turns to BLUE, it is indeed GBL.
  • If the ampoule does not change color or if it takes another color, the sample being tested does not contain any GBL.


The test is provided with a color chart to identify exactly the color showing the presence of GBL.

Color chart ID-Test identification GBL



ID-Test drug identification test (forensic)


Benefits of the ID-Test® GBL :

  • 100% legal in any country. It is a simple screening test.
  • Safe and easy to use.
  • Results in just few seconds.
  • Economical and very reliable.
  • No risk to the environment.
  • No acid neutralization required (bulb can be thrown away).
  • Long shelf life: up to 3 years.


The ID-Test® GBL package contains:

  • An ampoule containing the chemical identification reagent
  • A sampling pipette
  • A colored multilanguage leaflet
  • A zip bag to throw the used test in the trash can



The d'ID-Tests are available in 2 different packagings :

Tube of 1 test

The test is packaged in a single tube, with its instructions for use.

Box of 10 tests.

10 tests are packaged in the same box with instructions. Even more economical!


Important : The results of these tests are purely indicative. To be sure of the composition of the cannabis sample and the exact concentrations of Gamma-Butyrolactone (GBL), it must be analyzed by an analytical reference method such as GC/MS and/or HPLC-MS /MS.

Data sheet

Test typeIdentification of unknown substance
Results inLess than a minute