Has anyone had this done? I really need to have a test as i suffer pretty badly with IBS which i've been hospitalised for in the past. I know Holland and Barret do testing through outside people and they also test for dust etc which would be useful but wondered if anyone could recommend anywhere? I don't mind paying

and they have discovered she is intolerant to yeast - they said on a scale of 1-4 she is 3. This is what has been causing her migraines.