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Applications » Neurotransmitters » Choline and Acetylcholine

Choline and Acetylcholine

HPLC analysis of Choline and Acetycholine

  • Total analysis time < 10 min
  • Small sample volume: 5µL
  • Detection limit 1.5 fmol on column (0.3 nmol/L)

The ALEXYS Neurotransmitter Analyzer can be used for fast and sensitive detection of basal acetylcholine (ACh) levels in microdialysis samples. Analysis of ACh by HPLC-ECD is based on an ion-pairing separation, followed by post-column enzymatic conversion to hydrogen peroxide with acetylcholinesterase (AChE) and choline oxidase (ChO). Both enzymes are covalently bound to a stationary phase in an immobilized enzyme reactor (IMER). After conversion, the hydrogen peroxide is detected using the DECADE Elite electrochemical detector with Sencell on a Pt electrode. The method is optimized for analysis of small sample volumes at low nanomolar detection limit.