The nurse is caring for a client who has clinical manifestations of hypothyroidism. Which of the following laboratory tests is most accurate to evaluate thyroid function?

Question

Quizplus · Accepted Answer

The most sensitive and accurate laboratory test is measurement of TSH; thus it is often recommended as a first diagnostic test for evaluation of thyroid function. A low TSH level indicates that the client's hypothyroidism is caused by decreased anterior pituitary secretion of TSH. Low T3 and T4 levels are not diagnostic of the primary cause of the hypothyroidism. TRH levels indicate the function of the hypothalamus.

The Nurse Is Caring for a Client Who Has Clinical