have and it came back that I am "off the chart" allergic to milk and ALL milk products--butter, cheese, casein, etc. None of my medical docs offered to do this! I have been seeing a board certified nutritionist and we did the blood tests and stool testing. I also have what is called "Leaky Gut". My intestines do not have the "good bacteria" that processes my food and toxins secrete into my blood stream causing reactions. It is April 22, 2011 and I just found this out. But we are hopefull that this is what is causing my burning mouth! Bring up the web site RxAlternativeMedicine.com and read about Dr. James Smith. Friends--this is huge. He can perhaps help you find someone in your area that will do these tests for you. I will keep you all posted as to how my health improves. I anticipate that it will take some time for my body to get rid of all of the toxins. Keep me in your prayers that this is the information we ALL need!!!