Development of a new diagnostic method for galactosemia by high-performance anion-exchange chromatography with pulsed amperometric detection

J Chromatogr A. 2007 Jan 26;1140(1-2):157-62. doi: 10.1016/j.chroma.2006.11.085. Epub 2006 Dec 11.

Abstract

We developed a new non-derivatization analytical method for the determination of galactose in the diagnosis of galactosemia by high-performance anion-exchange chromatography (HPAEC)-pulsed amperometric detection (PAD). With an anion-exchange column, the analytes were separated efficiently using 3mM NaOH containing 1mM NaOAc, and 200mM NaOH was added for post-column reagent. The limit of detection (S/N=3) and limit of quantification (S/N=10) for galactose were 25ng/mL and 83ng/mL, respectively. Linear dynamic range was from 4.67mg/dL to 53.46mg/dL (r(2)=0.9999). The mean recovery of galactose for intra-, inter-day assays were found to be of satisfactory results (98.14-101.42%).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Blood Glucose / analysis
  • Blood Specimen Collection
  • Chromatography, Ion Exchange / methods*
  • Electrochemistry
  • Galactose / blood*
  • Galactosemias / diagnosis*
  • Humans
  • Infant, Newborn
  • Reference Values
  • Reproducibility of Results
  • UDPglucose-Hexose-1-Phosphate Uridylyltransferase / deficiency

Substances

  • Blood Glucose
  • UDPglucose-Hexose-1-Phosphate Uridylyltransferase
  • Galactose