The fastest, cheapest and easiest way for GMO detection that I’ve found is these “QuickCombs” made by envirologix. There is an array of chemical detection points on the various “tines of the comb.
Possibly the place to start would be to analyze the different comb teeth from these type of a product and create a group of indicators (rather than straight DNA tests) such as proteins + carbs + x + y + z between the GMO versions and the non GMO versions.
There aren’t an infinite amount of GMO currently in production. Here’s the current “high- risk” list:
I’d love to find a way to participate in helping to formulate these models/methods. No need for a “right to know” labeling law if SCIO can help us know what we are being fed.