My husband became ill about six years ago following flu. He had all the symptoms of coeliac disease (though we didn't know what it was). This continued for two whole years while his GP did lung function test, heart test, colonoscopy and found nothing. The GP suggested his loss of breath was due to age! My husband was not taken seriously at all. Then one night I wondered if it might be coeliac. We checked symptoms on the net and my husband could tick every box. We immediately cut out gluten and within 24 hours he felt better. A few weeks later, he went back to the GP and said he'd discovered the problem. The GP was not very helpful but sent him for a blood test. He was found to be seriously low on B12. However, he said he could not diagnose him as being coeliac without my husband eating gluten again for six weeks and then having a stomach biopsy. Of course, there was not way my husband could face being ill again just for the diagnosis. Is there another way?