Thyroid-stimulating hormone (also known as TSH or thyrotropin) is a peptide hormone synthesized and secreted by thyrotrope cells in the anterior pituitary gland, which regulates the endocrine function of the thyroid gland. TSH stimulates the thyroid gland to secrete the hormones thyroxine (T4) and triiodothyronine (T3). TSH production is controlled by thyrotropin-releasing hormone (TRH), which is manufactured in the hypothalamus. Synonyms: Polyclonal Thyroid Stimulating Hormone, Anti-TSH antibody, Polyclonal TSH antibody, Anti-Thyroid Stimulating Hormone antibody, TSH antibody, Thyroid Stimulating Hormone antibody.