Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

James H. Yen (Fed)

James Yen has been a member of the Statistical Engineering Division since 1997. He works in statistical data analysis, modeling, and computing in a wide variety of areas, including applications in forensic sciences, information technology, and homeland security. He has a long-standing involvement with the NIST project on the identification of  firearms and toolmarks. In addition, he has worked with the Organic Chemical Metrology group in the certification of over three dozen food and supplement Standard Reference Materials.

Technical Areas of Research and Consulting:

  • Forensic sciences, including firearms and toolmarks
  • Standard Reference Materials
  • Data analysis
  • Applied probability

Professional Activities and Societies and Standards Activities:

  • American Statistical Association Member


Development of an Improved Standard Reference Material for Folate Vitamers in Human Serum

Johanna Camara, Jeanita Pritchett, Yasmine Daniels, Mary Bedner, Michael Nelson, Mark Lowenthal, Zia Fazili, Christine Pfeiffer, Karen W. Phinney, Katherine E. Sharpless, Lane C. Sander, Katrice Lippa, James H. Yen, Adam Kuszak, Stephen Wise
The US National Institute of Standards and Technology (NIST) developed a Standard Reference Material® (SRM®) 3949 Folate Vitamers in Frozen Human Serum to

Certification of Standard Reference Material® 1568c Rice Flour

Chuck Barber, Colleen E. Bryan Sallee, Monique Johnson, Shaun Kotoski, Rick L. Paul, Nicholas Sharp, Maria Isabel Vega Martinez, James H. Yen, Lee L. Yu, Laura Wood, John Sieber, Stephen Long
The National Institute of Standards and Technology (NIST) recently released SRM 1568c Rice Flour which has value assignments for over 30 analytes, including
Created October 9, 2019, Updated December 8, 2022