A multicenter comparison of whole blood vitamin B6 assays.

  title={A multicenter comparison of whole blood vitamin B6 assays.},
  author={Bertrand D van Zelst and Roseri J A C Roelofsen de Beer and Marjolein Neele and Snje{\vz}ana Kos and Ido P. Kema and Frans P W Tegelaers and Christa Maria Cobbaert and Cas W. Weykamp and Robert de Jonge},
  journal={Clinical chemistry and laboratory medicine},
  volume={54 4},
BACKGROUND The aim of this study was to compare different analytical methods that are currently in use in the Netherlands for the measurement of whole blood vitamin B6. METHODS This method comparison study consisted of two separate parts. (1) Four laboratories participated in a pilot study in which the commercial Chromsystems and INstruchemie method, and a laboratory developed liquid chromatography-tandem mass spectrometry (LC-MS/MS) method and HPLC method were compared. Sixty-nine frozen… CONTINUE READING