An overview of radioanalytical techniques used in support of research, moni
toring programs, and field assignments directed by the U. S. Food and Drug
Administration's Center for Food Safety and Applied Nutrition (CFSAN) is pr
esented. The Winchester Engineering and Analytical Center annually determin
es radionuclide concentrations in 260 Total Diet Study foods, approximately
80 imported foods, and a selection of domestic foods collected near U. S.
nuclear power plants. Radioanalytical techniques used at CFSAN's neutron ac
tivation analysis laboratory at the National Institute of Standards and Tec
hnology are discussed along with applications for research, quality control
, and special projects.