J Clin Endocrinol Metab. 2024 Jul 12:dgae478. doi: 10.1210/clinem/dgae478. Online ahead of print. ABSTRACT PURPOSE: Autoantibodies to thyroid peroxidase (TPOAb) and thyroglobulin (TgAb) define pre-clinical autoimmune thyroid disease (AITD) which can progress to either clinical hypo- or hyperthyroidism. We determined the age at seroconversion in children genetically at risk for…