TG and Infertility: In a study by Grassi G et al. in 149 infertile couples with the evaluation of the etiology of infertility and thyroid autoantibodies (Tg Ab, microsomal Ab), 20.1% had a detectable level of TgAb and /or M Ab and in euthyroid infertile women with thyroid autoantibodies, detected no difference either in age of subjects or duration of infertility [25].