Marc Lefebvre

Publications (3)9.67 Total impact

• Article: 2010 white paper on recent issues in regulated bioanalysis & global harmonization of bioanalytical guidance.

  Natasha Savoie, Fabio Garofolo, Peter van Amsterdam, Surendra Bansal, Chris Beaver, Patrick Bedford, Brian P Booth, Christopher Evans, Mohammed Jemal, Marc Lefebvre, [......], Joseph C Marini, Robert Massé, Louise Mawer, Eric Ormsby, Mario L Rocci, Ct Viswanathan, Jason Wakelin-Smith, Jan Welink, Joleen T White, Eric Woolf
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  ABSTRACT: The 4th Calibration and Validation Group Workshop on Recent Issues in Regulated Bioanalysis, a 2-day full immersion workshop, was organized by the Calibration and Validation Group. Contract research organizations, pharmaceutical companies and regulatory agencies came together to discuss several 'hot' topics concerning bioanalytical issues and regulatory challenges and to reach a consensus among panelists and attendees on many points regarding method validation of small and large molecules.
  Bioanalysis 12/2010; 2(12):1945-60. · 3.22 Impact Factor
• Article: Determination of naproxen using DBS: evaluation & pharmacokinetic comparison of human plasma versus human blood DBS.

  Nikolay Youhnovski, Josée Michon, Sylvain Latour, Jean-Nicholas Mess, Annik Bergeron, Milton Furtado, Marianne Rufiange, Pascal Guibord, Marc Lefebvre, Robert B Macarthur, Fabio Garofolo
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  ABSTRACT: Dried blood spots (DBS) sampling is a well-known technology for qualitative determination such as DNA analysis and screening of newborn metabolic disorders. The scientific community has recently expressed interest in applying the DBS technique for quantitative determination of drugs in biological fluid. Two new bioanalytical assays were developed and validated for the determination of naproxen in human plasma and in DBS samples using liquid chromatography coupled with tandem MS. Furthermore, plasma and DBS clinical samples were collected from four subjects enrolled as part of a bioequivalence study. Concentration data for plasma and DBS samples were determined and pharmacokinetic (PK) profiles in plasma and in DBS samples were compared. A strong correlation between PK data obtained by the DBS and conventional plasma method was observed, which makes DBS a valuable technique for further naproxen bioavailability and PK investigations and studies.
  Bioanalysis 08/2010; 2(8):1501-13. · 3.22 Impact Factor
• Article: Importance of metabolite testing in regulated bioanalysis.

  Fabio Garofolo, Natasha Savoie, Annik Bergeron, Claude Amestoy, Marc Lefebvre, Louis Caillé, Milton Furtado, Chantal Menard
  Bioanalysis 07/2010; 2(7):1171-4. · 3.22 Impact Factor