Disease Condition

TSH

FT4

Hypothyroidism

Subclinical hypothyroidism

>4.2 mIU/L

0.9 - 1.7 ng/dL

Overt hypothyroidism

>4.2 mIU/L

<0.9 ng/dL

Hyperthyroidism

Subclinical hyperthyroidism

<0.3 mIU/L

0.9 - 1.7 ng/dL

Overt hyperthyroidism

<0.3 mIU/L

>1.7 ng/dL