Celiac Disease Health Center
Because the symptoms of celiac disease vary so widely, the only way to know for sure that you have the disease is through a diagnosis from a doctor.
Diagnosis will most likely involve endoscopic biopsy, a procedure in which a doctor inserts a small camera into the small intestine to assess the damage and take tissue samples. After analyzing the samples, the doctor can tell you whether you have celiac disease.
In place of the endoscopic procedure, you also might be given the option of swallowing a large pill that contains a small camera to take pictures of your small intestine. However, this procedure may not be as effective as the endoscopic biopsy.