Industries which have a 'free from' claim will have to include an exhaustive allergen control and analytical program in place
The testing for allergens should be at the lowest level of analyte in a sample that can be reasonably quantified. Total milk LOQ1ppm, Peanut LOQ 1 ppm, Almonds LOQ 0.3 - 2 ppm, Eggs 0.3 ppm, & Soy 2ppm.
No safe levels have been established for soy and like Gluten and Sulfites there is no 'soy free' definition available. The safe levels for Gluten will be <20ppm and Sulfites at 10ppm.
It is difficult to gather data as to what typical levels of soy could be present in ingredients as it depends on how the cultivars are grown, what kind of quality assurance is applied to the process - the process has to be controlled from field, transportation, storage, and processing - in the end what goes out of the door is what counts.
http://www.inspection.gc.ca/english/fssa/labeti/allerg/queste.shtml










