In advanced cases of Hashimoto’s and primary hypothyroidism, this lab test will be elevated. In the case ofGraves’ diseaseand hyperthyroidism, TSH levels will be low. People with Hashimoto’s and mild or central hypothyroidism may have a “normal” reading on this test. If you’ve been a...
Test Details Use Thyroid function test. Investigation of low thyroxine (T4) result; the differential diagnosis of primary hypothyroidism from normal, and the differential diagnosis of primary hypothyroidism from pituitary/hypothalamic hypothyroidism. TSH is high in primary hypothyroidism. Low TSH occurs in...