NCGS is 10x more common than celiac disease. This should help you get off to a good start:   

Yes, @Ginger38,  anti gluten antibodies are only found in Celiac Disease.  NCGS does have similar gastrointestinal symptoms as Celiac Disease, but no autoimmune antibodies are produced in NCGS.  NCGS may be a pre-Celiac state in people with a genetic predisposition for Celiac Disease.   Have you had a genetic test?  You have to have inherited certain genes in order to develop Celiac Disease.  You don't have to eat gluten for a genetic test for celiac disease.  Some doctors will make a Celiac diagnosis if you have the genes and improvements on a gluten free diet.  Plus you've got positive antibodies.  You're in the tribe!   All first degree relatives (mom, pop, siblings) should be tested, too.   

so its helpful for cross contamination possibility in restaurants.

I found a diy flour blend  500 g (2 ¾ cups + 2 tbsp) white rice flour (make sure that it's finely ground) 300 g (1 ¾ cups + 1 tbsp) potato starch (note that this is different from potato flour) 200 g (1 ⅓ cups) corn flour (US)/maize flour (UK)  I see recipes that say gluten-free flour blend so I guess I can use something like this and try yours as well. When do you need to use Xanthan gum?  I also noticed gluten-free bread is pricy but I saw Canyon or Promise that taste good while pricy however for bread crumbs I see brands like 4C and its not the same. I see recipes for crushed potato chips as a breading which is interesting. Thanks 

I'm planning on eliminating it from my diet and seeing how that goes.