John E. Cornell wrote: >Is there any reliable, reputable test to confirm that I have a problem >with casein? Antibodies to casein can be tested for just like testing for gliadin ones. I'm sure the places that test for 100 food sensitivities include casein in the panel. Dr. Cade, in Florida, is testing autists for casein problems and the lab he uses is: Alletess Medical 216 Pleasant Street Rockland, MA 02370 1-800-225-5404 There is a $64 charge for this test, which includes IgA and IgG for both gluten and casein. I suppose it would be cheaper if casein alone is tested for. But, as with any antibody testing, you must be consuming the food, or the system won't be producing antibodies against it.