Euthyroid<unk>  syndrome must be differentiated from other causes of hypothyroidism on the basis of clinical features and laboratory findings. In euthyroid<unk>  syndrome, serum T3 is decreased more than T4, the T3RU (T3 resin uptake) is high, and TSH is normal or mildly decreased. In primary hypothyroidism, serum T4 is decreased more than T3, the T3RU (T3 resin uptake) is low, and TSH is increased. Other causes of hypothyroidism include transient hypothyroidism, sub-clinical hypothyroidism, central hypothyroidism (pituitary or hypothalamic) and peripheral resistance to TSH/TRH.
Differentiating Euthyroid sick syndrome from other diseases
Differentiating Thyroid adenoma from other Diseases
Differentiating Diabetes insipidus from other diseases
Differentiating Hashimoto's thyroiditis from other diseases
Differentiating Diabetic ketoacidosis from other diseases
Acromegaly differential diagnosis
Euthyroid sick syndrome medical therapy
Thyroid nodule differential diagnosis