Thyroglobulin antibody should be less than 60IU/ml normally, so thyroglobulin antibody 123IU/ml is not normal. Due to different testing methods and reagents, the reference indexes vary from hospital to hospital and need to be analyzed specifically. Thyroglobulin antibodies belong to thyroid autoantibodies and are used to help diagnose autoimmune thyroid diseases. Elevated thyroglobulin antibodies can be seen in Hashimoto’s thyroiditis and Graves’ disease. Thyroglobulin antibodies are only an indicator of autoimmune thyroid disease, but they do not reflect thyroid function and do not clarify which thyroid disease is present. To assess thyroid function and make a definitive diagnosis, it is also necessary to look at free triiodothyronine, free thyroxine and thyroid-stimulating hormone, as well as other thyroid antibodies and thyroid ultrasound. If elevated thyroglobulin antibodies are found, you should go to the hospital, complete the relevant tests, and be evaluated by a specialized doctor for treatment.