I have been told by a GP that I do not have Coeliac's disease after some blood tests. I don't believe I had my intestines checked though (I've had a series of tests and can't always remember what's what). However I went through months of dietary experimentation, pain, cramps, fatigue and illness to narrow down that both wheat and gluten have a very detrimental effect on my health. It makes me sick for a few days and exhausted for a few more after if I have even a few crumbs. So, my GP and I diagnosed gluten intolerence together, and my diet has been chanegd appropriately, and it is rarely a problem for me now.
It originally came up because I was doubled up several times a day with excrutiating abdominal cramps, and some other toilet-related symptoms.
I meet others who claim to have gluten intolerence, and what they mean is that they get a bit bloated ... maybe a tiny touch of wind, a bit looser - nothing major, so they keep eating wheat and gluten when it's inconvenient for them to do otherwise. It stumps me, and it's a bit like those girls who used to annoy me by complaining about terrible, awful PMT and period cramping - for a little twinge they felt for 5 minutes .... while I was off school regularly for 3 days in agony.
I'm not sure on the reliability of some of the medical tests for allergies. I had some extensive blood work done, which among other things concluded that I have no allergy to penicillin, which almost killed me the last time I was given it.