Source: US Department of Agriculture Foreign Agricultural Service
In most cases Japan’s Food Labeling Law does not require genetically engineered (GE) food labeling for highly processed food products that contain no foreign genetic material. However, food items that contain GE products that have had their nutritional values significantly modified by inserted foreign DNA, must be labeled as GE even if no foreign material remains in the product. Currently, this is limited to high-oleic soybeans, stearidonic acid-enhanced soybeans, high-lysine maize, and products derived from these three products that retain the nutritionally enhanced component. In the case of higholeic soybean oil, no feasible testing methodology to differentiate between oil derived from GE high oleic soybeans and non-GE high oleic soybeans is available.