Hi,
I have scoured the forums looking for an answer. My endocrinologist tested me for various vitamins and did the HLA testing. I am deficient in all vitamins - A, E, D, B12, Folate, Iodine. This points to an absorption problem - not likely SIBO due to folate level being so low. The HLA testing came back, and I do not have either DQ2, DQ8 haplotypes...