Please could any one who has been to see Dr. Peatfield tell me what sort of tests he does and if he specialises in anything other than Thyroid issues. Thanks Love Tracy. I have highly raised IGG, and am totally confused as to what causes this. I have read it's linked to the immune system, the stomach and allergies. But I am not sure how they link up, basically I need someone to explain why this would happen. It's beginning to become unfathomable to me. Tracy <img src="/ubbthreads/images/graemlins/confused.gif" alt="" />