<<Disclaimer: Verify this information before applying it to your situation.>> I did the Two Week Gluten Challenge, per my doctors order. Had the Biopsy done (not a problem, truly painless) and the results are in. Negative. I know in my heart that the challenge was not long enough. I do not have the energy to fight the doctor, altho I did question 'is this long enough'. I am going to stay Gluten Free, simply because I feel so much better, and I know I could not function at the level I need to if I ate any Gluten. So, I am an 'undiagnosed' .... Pat Coulter Williamsport, PA