There seems to be a lot of confusion on this site regarding gluten intolerance. If you've been tested for this and your results have come back clear, then you do not have a sensitivity to gluten. If, however, you know for certain that wheat, barley and rye give you problems, your issue is with the fructans contained in those cereals not the gluten. As anybody doing the low FODMAP diet will know, fructans are not 'safe' food.
The following is a quote from Patsy Catsos's website ibsfree.net which she also reiterates in her book 'IBS - Free At Last':
'It is important to note that even though wheat happens to be the primary source of fructans in our diets, intolerance of this kind has nothing to do with the wheat protein, gluten, which those with celiac disease must avoid.'