How does one go about getting a food allergy test? Would I just ask my doctor? My health insurance situation is currently a bit hazy, so is there any kind of take-home test? Any advice or links to info on food allergy testing would be much appreciated.

I am asking because after being paleo for about 4 months now I am almost positive I have food allergies to certain grains. Eliminating grains has improved my health dramatically, but it is still awkward when I try to explain to people that I don't want pizza/subs/pasta/etc. I feel like I have an allergy to gluten, wheat, or something, but I would like to get testing done to perhaps get some formal recognition.