As a result, several countries have imposed different biosafety laws and surveillance programmes to regulate GMO use (De Jong,2010). Within the European Union (EU), current laws and regulations
on the traceability and labelling of GMOs require mandatory labelling of food and feed containing any GM ingredients above a certain threshold (>0.9% GMO content) and the identification of GM products throughout the supply chain (The Commission of the
European Communities, 2003a, 2003b). Furthermore, the EU has recently adopted a zero tolerance policy towards low level presence of unauthorized GMOs in foodstuffs, with a 0.1% threshold for
permissible presence of unauthorized GMO events in animal feed (The Commission of the European Communities, 2011). Turkey has adopted similar labelling thresholds in compliance with EU legislation,with Turkish government directives outlining a 0.9% threshold for mandatory labelling of authorized GMOs in foods and feeds, and 0.1% for unapproved GM material in feeds. Furthermore,