The Food & Drug Administration (FDA) internship we are involved with deals with the identification and quantitative measurement of mycotoxins in food. The samples tested are both domestic and imported. In this project the following four types of mycotoxins are monitored: a) aflatoxins, mainly found in peanuts, nuts and some seeds, b) patulin isolated from apple juice, cider and puree, c) ochratoxin that exists in nuts and seeds and d) deoxynivalenol (DON) encountered in grain flour such as wheat and corn. The procedure for sample composite and quantitative chromatographic testing will be discussed.