Detection of residues of genetically modified soybeans in breaded fried turkey cutlets

The presence of genetically modified organisms (GMOs) in food products is u sually ascertained by the polymerase chain reaction (PCR) or nested PCR if sensitivity has to be increased. Since most, if not all, GMO products are o f plant origin, the target sequences are the 35S promoter or NOS terminator . The extreme sensitivity of nested PCR can be misleading if the results ar e not interpreted correctly, since contamination of non-GMO products with r esidual amounts of GMO may be positive, We report that breaded turkey breas t cutlets labeled as containing GMO soybean products were actually prepared from wheat flour that had been contaminated with transgenic soybean.