Abstract:

The labeling of genetically modified (GM) foods is closely related to consumers’ right to know, which has been
the focus of attention. As the coexistence of GM foods and non-GM foods is being extended, China’s current labeling system
of GM foods, which lacks threshold setting and scientific proof and has weak feasibility and defected regulation due to the
qualitative standards, needs to be improved. This paper analyzes the connotation, type, calculation and function of labeling
threshold for GM foods. By comparing labeling threshold management policies in other countries, it is pointed out that China
should establish scientific and reasonable positive labeling and negative labeling thresholds for GM foods as being guided
by the principles of prevention, feasibility, economy and transparency by separate calculation using DNA as the criterion in
order to fully exert the functions of its labeling system of GM foods.

Key words: genetically modified food, positive labeling, negative labeling, threshold