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.

Dietary Supplement Laboratory Quality Assurance Program: Exercise G Final Report



Kate Rimmer, Laura J. Wood, Melissa M. Phillips


The NIST Dietary Supplement Laboratory Quality Assurance Program (DSQAP) was established in collaboration with the National Institutes of Health (NIH) Office of Dietary Supplements (ODS) in 2007 to enable members of the dietary supplements community to improve the accuracy of measurements made in compliance with various regulations including the dietary supplement current good manufacturing practices (cGMPs). Exercise G of this program offered the opportunity for laboratories to assess their in-house measurements of nutritional elements (Na), contaminants (Pb), water-soluble vitamins (folic acid), fat-soluble vitamins (ß-carotene), and anthocyanins in foods and/or botanical dietary supplement ingredients and finished products.
NIST Interagency/Internal Report (NISTIR) - 8163
Report Number


DSQAP, dietary supplements, quality assurance programs


Rimmer, K. , Wood, L. and Phillips, M. (2017), Dietary Supplement Laboratory Quality Assurance Program: Exercise G Final Report, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed June 20, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created January 10, 2017, Updated October 12, 2021