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I often got gluten and soy ingestion when eating out.  It was so
frustrating that I didn't even want to go out with friends and relatives.
Someone put a great tip out that has helped so much, that I want to share
it with those who may have missed it.  Ask the chef to put aluminum foil
on the grill before cooking meat.  Since I have done this, I have not had
one problem eating out, when before it was almost 90 percent sure of
getting poisoned.  I am sure the soy connection intensified the reaction,
since everyone uses soy oil to cook with, but I am sure gluten also
sticks to the grill.  Hope this helps someone.  Carol in NJ