Euthyroidism is defined as normal thyroid function that occurs with normal serum levels of TSH and T4.

What does it mean if you have Euthyroidism?

Euthyroid: The state of having normal thyroid gland function. As opposed to hyperthyroid (overactive thyroid) or hypothyroid (underactive thyroid).

What is normal Euthyroidism?

The euthyroid state was defined as thyroid stimulating hormone (TSH) 0.45–4.49mIU/l, and subclinical hypothyroidism as TSH 4.5–19.9mIU/l with free thyroxine (fT4) levels within reference range.