Digital PCR for GMO Quantification
Food testing labs have traditionally used conventional PCR and quantitative real-time PCR (qPCR) to detect the presence of genetically modified organisms (GMOs) in food and feed. When quantification is required, GMO content in these samples is expressed in relative terms as the ratio of the quantity of the transgene, which is the nucleic acid fragment introduced in the host genome, to that of an endogene, a gene normally found in the host genome.