Genetic Testing For Celiac Disease

You hear it all the time, I think I may have Celiac disease.  My stomach hurts,  I have diarrhea, constipation, and the list goes on and on.  Many doctors do an array of tests which might be unnecessary, until you check for the gene for Celiac.  So as you see, you need one of two genes in order to get Celiac,  if no gene present the you can never get the disease.  Just because you carry the gene it also doesn't mean you have or will get the disease, you carry the gene for it.  First step should be to see if it is possible for you to have the disease by this simple blood test.