Nondigest liberation of biomarkers from plasma: A novel two-stage ultrafiltration approach

Eduard Rogatsky, Vlad Tomuta, Daniel T. Stein

Research output: Contribution to journalArticle

1 Scopus citations


A simple procedure for sample preparation of human plasma by two stages of ultra-filtration using one device is described. Our approach is useful for nondigest liberation of biomarkers bound to albumin and other plasma proteins. The analyte contained in the ultrafiltrate can be directly analyzed without additional sample preparation, and quantified by 2-D RP-RP LC/MS.

Original languageEnglish (US)
Pages (from-to)245-248
Number of pages4
JournalJournal of Separation Science
Issue number2
Publication statusPublished - Feb 1 2007



  • 2-D chromatography
  • Albumin
  • Biomarkers
  • LC/MS
  • Ultrafiltration

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

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