thyroid function test results in hyperthyroidism and in conditions simulating hyperthyroidism
Last edited 07/2018 and last reviewed 08/2021
thyroid function test results in hyperthyroidism and in conditions simulating hyperthyroidism
condition |
TSH |
total T4 |
free T4 |
total T3 |
|
overt hyperthyroidism |
suppressed |
elevated |
elevated |
elevated |
|
subclinical hyperthyroidism |
suppressed or low |
normal |
normal |
normal |
|
TSH-secreting pituitary adenoma |
normal or elevated |
elevated |
elevated |
elevated |
|
oestrogen excess |
normal |
elevated |
normal |
elevated |
|
nonthyroidal illness syndrome |
low |
normal or mildly decreased |
normal |
low (and reverse T3 is elevated) |
|
glucocorticoid and/or dopamine therapy |
low |
normal |
normal |
normal |
Reference: