cousin have the condition and as I had all the same symptoms I went gluten free for nearly a year before I had the scope done. I could only stay on gluten for 3 and half weeks as I got so ill and and felt system failure with even my kidneys not working properly. My test came back negative. I was amazed and since my diagnosis my 6 year old grandson has been diagnosed with coeliac disease too which could only have come from me. The doctors have nothing to tell me except to stay off gluten!