Euthyroid (effect of amiodarone on thyroid hormone metabolism) | Type I or II hyperthyroidism | Hypothyroid | |
T3 | Normal or low normal | Raised > 3.0 nmol/l | Low or low normal |
T4 | Raised, may be in excess of 60 pmol/l | Raised | Low, normal |
TSH | Raised, normal or low | Low | Raised |
Reference ranges: total T3 1.1 to 2.8 nmol/l; free T4 10 to 25 pmol/l; TSH 0.15 to 3.50 mU/l.