Grace Hahm earned her B.S. in Biochemistry from the University of Maryland, College Park. She started her tenure at NIST in 2015 as a student research intern in the NIST Organic Chemical Measurement Science Group (now the Organic Chemical Metrology Group) under the guidance of Melissa M. Phillips. She has contributed to the development of analytical methods and value assignments of an array of organic species: antioxidants (anthocyanidins), choline, carnitine, folates, as well as mycotoxin contaminants in a variety of food and dietary supplement NIST Standard Reference Materials (SRMs). As a newly hired physical science technician in 2018, her work involved providing accurate reference measurements for Vitamin D metabolites in human serum for interlaboratory comparison studies, such as the Vitamin D Standardization Program (VDSP) as well as the Vitamin D External Quality Assurance Scheme (DEQAS).