Subclinical hypothyroidism

In medicine, subclinical hypothyroidism is an elevated thyrotropin (TSH) concentration can maintain a normal or near normal thyroxine (T4) concentration.

Thyrotropin level
The thyrotropin level helps predict progression to overt hypothyroidism.

Antithyroid peroxidase antibodies
Antithyroid peroxidase (also called antithyroid microsomal) antibodies my help predict progression to overt hypothyroidism.

Screening
The US Preventive Services Task Force states:


 * "t is uncertain whether treatment will improve quality of life in otherwise healthy patients who have abnormal TSH levels and normal free  thyroxine levels"