<<Disclaimer: Verify this information before applying it to your situation.>> A friend thought she had similar symptoms to celiac. The doctor sent a blood test to the Mayo Clinic which came back as negative. The procedure is listed as Endomysial Abs, Ser. Exactly what is this test? And could you get a negative reading and still have CD or is the test pretty conclusive? She needs help and doesn't know where to go from here. Thanks, Bev Mansfield, OH