Final answer:
Hashimoto thyroiditis is an autoimmune disease that leads to hypothyroidism. The expected levels of TSH, T4, and T3 in Hashimoto thyroiditis are increased TSH and decreased T4 and T3.
Step-by-step explanation:
The expected levels of TSH, T4, and T3 in Hashimoto thyroiditis, the most common cause of hypothyroidism, are as follows:
TSH (Thyroid Stimulating Hormone): Increased levels of TSH
T4 (Thyroxine): Decreased levels of T4
T3 (Triiodothyronine): Decreased levels of T3
Hashimoto thyroiditis is an autoimmune disease where the immune system attacks and destroys the thyroid gland, leading to insufficient secretion of thyroid hormones. The increase in TSH levels is due to the lack of thyroid hormones, which stimulates the pituitary gland to produce more TSH in an attempt to compensate for the low levels of T4 and T3.