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Mark Lowenthal

Mark’s research activities at NIST include the measurement of amino acids and proteins in human serum.  He has developed new methods for quantification of human cardiac troponin I in serum involving immunoassay development and multiple-reaction monitoring mass spectrometry, and performed absolute quantification measurements of amino acids in plasma.  These activities have led to the production or certification of several SRMs. A separate focus is on development of techniques for characterization of proteins and small molecules bound to nanoparticles.  Mark has co-authored more than a dozen peer-reviewed publications.


Research Chemist
Biomolecular Measurement Division
Bioanalytical Science Group

Employment History:

  • Research Assistant, NASA-Goddard Space Flight Center, 1999-2002
  • Research Scientist, National Cancer Institute, National Institutes of Health, 2002-2005
  • Postdoctoral Research Fellow, University of Colorado Health Sciences Center, 2005-2007
  • Research Chemist, NIST, 2007-present


  • Chemistry, BS, James Madison University 1998
  • Analytical Chemistry, Ph.D., University of Maryland, College Park 2002

Phone: 301-975-8993
Fax: 301-977-0685