-To be safe cook it yourself.
-To be safer eat whole foods(came out of the ground) avoid packaged items.
-If you buy a packaged item read the label for ingredients and what its processed with, and Google it. Yay for smart phones. I use mine in the store all the time.
-Check if certified gluten free. Do to marketing tactics a lot of products say gluten free (GF) when there processed with unsafe items. Cross contamination is horrible and painful.
- Not everything is called gluten. watch out for malt, seasoning mixes, sauces(especially soy based),...
here is a link to label reading 101 https://www.csaceliacs.org/label_reading_101.jsp
-You may have allergies or sensitivity besides gluten. Food dairies never worked for me there was to much going on. I will Write in more detail in a future post but here is what I tried, Special Carbohydrate Diet to give my body a chance to calm down. http://www.breakingtheviciouscycle.info/ GAPS Diet, http://www.gapsdiet.com/gaps-full-diet.html which is a similar idea and Paleo Diet. This is the only paleo cook book I own I usually just use other blogs for ideas. http://balancedbites.com/practicalpaleo/
I have had a skin test which was done by an allergist, thankfully needles don't bug me. I tried acupuncture for a while too which included a muscle test, which was helpful.
More resources that may come in handy:
lots of info packed in the first two:
If your new and don't know what celiac is
Depressing what you can't eat list
I am not endorsed by anyone just sharing what I know and have found.