TSH level T4 level T4 level

High High Low
Congenital absence of T4-T3*converting enzyme; amiodarone (Cordarone) effect on T4-T3 conversion

High Normal Normal
((6 to 10 µU
per mL
[6 to 10 mU
per L])

Subclinical hypothyroidism with low risk for future development of overt hypothyroidism

High Low Low
Primary hypothyroidism