Synthetic Cannabinoids (UR144/XLR11)

Synthetic Cannabinoids are chemical compounds that mimic the effects of THC, the main active ingredient of cannabis. They bind to the cannabinoid receptors in the brain and were developed to treat pain. The two most common synthetic cannabinoids were JWH-018 and JWH-073. New versions of these include AM1248, AKB48, UR144 and XLR11. UR144 and XLR11 are the new generation of synthetic cannabinoids and are chemically different to the first generation. New generations of synthetic cannabinoids are continuously emerging to replace the synthetic cannabinoids that have been made illegal. The napthlene ring in JWH-018 is substituted with a tetramethylcyclopropyl group to form UR144. XLR11 is the fluorinated version of UR144.

Whole Blood
Post Mortem Blood
Oral Fluid
Vitreous Humor

Cross Reactivity

Analyte Compound
Cross Reactivity %
Synthetic Cannabinoids UR144/XLR11
LOD: 0.27 ng/mL
UR144 N-Pentanoic Acid 100
UR144 N-(5-hydroxypentyl) metabolite

All data in the above table refers to our whole blood matrix.

Microplate Readers Available

Product ds2 7


  • Fully automated compact reader
  • Processes 100 samples per run
  • Ideal for routine drug detection

Product elx800 cutout tox logo


  • Semi-automated robust microplate reader
  • Reads 96 wells in 30 seconds
  • Ideal for routine drug detection

UK: +44 (0)28 9442 2413
USA: +1 304 728 2890