Im not sure about gluten...I mean i had saliva testing for sensitivities and had none.But is the test very reliable?Who knows.I do know though that i do not have celiac disease.Can I ask what your symptoms of sibo are?And also how were you diagnosed?I have been sick for 4 months with episodes that seem to flare up..although i dont remember the last time i actually felt good and normal.I thought for sure i had parasites,but after 7 stool tests,including one from diagnostech lab and one from the vet even...all negative.After 4 months i tested positive for sibo.Im just trying to figure out if thats all i have,is what is causing all my symptoms,and how i want to deal with it.