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Johanna Camara (Fed)

Research Chemist

Johanna began her employment at NIST as an NRC Postdoctoral Associate. Her activities have encompassed a wide variety of areas, including: MALDI-ToF mass spectrometry of bacteria, molecular cloning of stable-isotope labeled proteins for mass spectral internal standards, and the quantification of small organic molecules in pharmaceuticals, foods, and biological SRMs with liquid chromatography-mass spectrometry. She has participated in the Summer Undergraduate Research Fellowship program at NIST as an application reviewer and research mentor. Johanna is also the Clinical SRM Program Coordinator, the Quality Manager for the Organic Chemical Metrology Group, and the Deputy Quality Manager for the Chemical Sciences Division.

Membership and Professional Activities:

  • Clinical and Laboratory Standards Institute, Clinical Chemistry and Toxicology Consensus Committee
    - Member, 2013 - 2015
    Chemistry and Toxicology Expert Review Panel Chairholder, 2016 - 2018
    Chemistry and Toxicology Expert Review Panel Member, 2019 - present
    - NIST delegate to CLSI, 2013 - present
  • US Technical Advisory Group to ISO/TC212 Clinical laboratory testing and in vitro diagnostic test systems
    - Voting member, 2013 - present
    - Executive Committee Member 2017 - present
  • Washington Chromatography Discussion Group
    - Committee member, 2005 - 2007
  • IFCC Working Group-Commutability member, 2014-present


  • COSMOS Club Grants-in-Aid to Young Scholars, 2004
  • CSTL Exploratory Research Proposal, FY2006
  • NIST Materials Measurement Laboratory Outreach Accolade for developing and leading a week-long training course on isotope dilution-mass spectrometry in clinical measurements for staff from six National Metrology Institutes, 2017
  • 2018 Allen V. Astin Measurement Science Award for Advancing Vitamin D Metrology


Recommendations for setting a criterion and assessing commutability of sample materials used in external quality assessment/proficiency testing schemes

Sverre Sandberg, Pernille Fauskanger, Jesper Johansen, Thomas Keller, Jeffrey Budd, Neil Greenberg, robert rej, MAURO PANTEGHINI, VINCENT DELATOUR, Ferruccio Ceriotti, Liesbet Deprez, Johanna Camara, Finlay MacKenzie, Alicia Lyle, Eline van der Hagen, Chris Burns, W. Greg Miller
It is important for external quality assessment materials (EQAMs) to be commutable with clinical samples; i.e., they should behave like clinical samples when

Recommendations for Setting a Criterion for Assessing Commutability of Secondary Calibrator Certified Reference Materials

W. Greg Miller, Thomas Keller, Jeffrey Budd, Jesper Johansen, Mauro Panteghini, Neil Greenberg, Vincent Delatour, Ferruccio Ceriotti, Robert Rej, Johanna Camara, Liesbet Deprez, Finlay MacKenzie, Alicia Lyle, Eline van der Hagen, Chris Burns, Pernille Fauskanger, Sverre Sandberg
A secondary higher-order calibrator is required to be commutable with clinical samples to be suitable for use in the calibration hierarchy of an end-user
Created October 9, 2019, Updated December 8, 2022