TPO and autoimmune thyroid disease: FT4: ▴ SFTSH: ▾ SF* In mothers with ID, TSH was ↑, FT4 was ↓, and TPO-Ab was ↔.* In mothers with ID, subclinical hypothyroidism and thyroid autoimmunity (TPO-Ab > 60 kIU/L) were ↑.