[anonymous]

“We haven’t tried venison, we haven’t tried turkey, fish, bison etc.. so she said that there is other options to explore before going into the “hydrolyzed food”, that is very extreme”.

It is not extreme. All commercial foods are subject to cross contamination of ingredients.
Different scenario with prescription foods, they are especially formulated so that cross contamination does not occur, that is part of the reason they cost more.