Conditions That Decrease Serum Thyroid-Stimulating Hormone Values*

• Lab error

• T4/T3 toxicosis (diffuse or nodular etiology)

• Excessive therapy for hypothyroidism

• Active thyroiditis (subacute, painless, or early active Hashimotoís disease); some patients

• Multinodular goiter containing areas of autonomy; some patients

• Severe nonthyroid illness (esp. acute trauma, dopamine or glucocorticoid); some patients

• T3 toxicosis

• Pituitary insufficiency

• Cushingís syndrome (and some patients on high-dose glucocorticoid)

• Jod-Basedow (iodine-induced) hyperthyroidism

* High sensitivity TSH method is assumed.

Previous slide

Next slide

Back to first slide

View graphic version