The baby was biochemically hyperthyroid and had elevated levels of total and free thyroxine and normal levels of triiodothyronine, indicating thyroxine toxicosis.

• 血生化检查发现婴儿甲状腺机能亢进，总甲状腺素和游离甲状腺素水平升高，碘甲腺氨酸钠水平正常，提示甲状腺素中毒。