Polymerase chain reaction (PCR) represents the state-of-the-art technology in detecting the presence of genetically modified organisms (GMOs) in foods and ingredients. However, "One of the major challenges, when detecting the presence of biotechnology-derived events in grains and oilseeds, is that different labs do not always obtain comparable results when testing identical sample material," says Ron Jenkins, Proficiency Program Manager for the Technical Services Div. of the U.S. Dept. of Agricu…