GABA and Glutamate

Chromatogram Glutamate and Gaba

ALEXYS Neurotransmitter Analyzer





The ALEXYS Neurotransmitter Analyzer is a modular system that can be customized for the analysis of specific neurotransmitters. A sensitive method has been developed for the analysis of the amino acid neurotransmitters GABA and glutamate, as well as histamine and several other LNAA's (large neutral amino acids). It has a fully automated OPA derivatisation procedure using an AS 110 user program. Late eluting peaks from the OPA reagent are conveniently removed by an automated wash step. GABA/Glu analyzer can be down-scaled to a sample volume < 10 µL.

Application Notes

  • 213_020_08 - GABA and Glutamate, Histamine, Amino Acids

Application Notebook

  • 213_070_02 - Application Notebook Neurotransmitter

Product Flyers

  • 2013 - Flyer AS110 Autosampler
  • 2013 - Flyer DECADE II
  • 2013 - Flyer LC110S Pump
  • 2013 - Flyer OR110 Organizer
  • 2013 - Flyer SenCeII


  • 221_119_01 - Recent Developments in Neurotransmitter Analysis Neuroscience2014_04

System configuration

For the analysis of GABA and Glutamate we selected the SenCell. This cell not only has an excellent reproducibility but also the best possible detection sensitivity. We routinely inject 5-20 µL, therefore we selected a micro version of our AS 110 autosampler. We use a 2 mm ID column at 250 µL/min as a standard.

The ALEXYS system comprises the following parts:

  • AS 110 autosampler, cool, micro
  • LC 110S HPLC pump
  • OR 110 organiser rack
  • Clarity data acquisition software
  • DECADE Elite electrochemical detector, DCC (dual channel)
  • SenCell with GC WE, salt bridgeGABA and Glu Analyzer 

For more details see product catalogue.


Part no Description
180.0070C ALEXYS GABA and Glutamate Analyzer