lol...supposed to test for food safety as well... I thought
GMO is not a drug. I agree, but it is a genetically modified product, and that hasn't been tested...that I know of, except by Monsanto, which of course, states that the rats that ate GMO's and had weight gain and adverse health risks were nothing to worry about...
The separation of drugs and food is a critical one. Giving people an experimental drug is mostly unethical. You get volunteers for testing because the drug testing to date indicates a worthwhile improvement even with side-effects considered for people who are ill. It's the opportunity for improvement that makes human testing ethical. You also know the desired outcomes and can measure for them.
For food, you have no ethical basis for attracting volunteers. You have no limited range of possible effects. There is no way to control for variables in the same way. And you're not adding a chemical to the diet. You totally skipped over the part of the chemical analysis and the comparison to the original. That's how we know the safety for the values of safe as currently understood.
Again, what are you testing GMO food for? The chemical makeup is safe. They're not adding new unknown chemicals to the food product.