<<Disclaimer: Verify this information before applying it to your situation.>> On Oct 27, 1995 21:47:37, 'Ellen Eagan <[log in to unmask]>' wrote: >The test that you are thinking of is the d-xylose test. The other test involves drinking a solution of two sugars, one normally permeable through the intestinal wall, the other not. The ratio of these in the urine distinguishes leaky from tight. Perhaps one of these tests will be relied on in the future for oats testing, given that currently available antibody tests don't pick up oats. Kemp Randolph Long Island [log in to unmask]