Thyroglobulin antibodies (Tg Abs) and Thyroid peroxidase
are present in
Grave's disease, Hashimoto's thyroiditis, idiopathic thyroid
atrophy, De Quervain's thyroiditis - transiently, and certain percentage of people without thyroid disease. Thyroglobulin may occur in organ-specific autoimmune diseases, including pernicious anemia, Addison's disease, type I diabetes mellitus , polyglandular endocrine failure syndromes etc.