The Wizard Magnetic DNA Purification System for Food is designed for purification of DNA from a variety of food samples including corn seeds, cornmeal, soybeans, soy flour and soy milk. Processed food, such as corn chips, chocolate and chocolate-containing foods, lecithin and vegetable oils may also be used with the suggested protocol variations. The DNA purified from these samples can be used in PCR-based testing for genetically modified organism (GMO) DNA sequences.