The pituitary gland is a pea-sized endocrine gland located at the base of the brain.
Blood tests are used to evaluate the function of each endocrine gland.
British Dictionary definitions for endocrine gland
any of the glands that secrete hormones directly into the bloodstream, including the pituitary, pineal, thyroid, parathyroid, adrenal, testes, ovaries, and the pancreatic islets of Langerhans Also called ductless gland
(ěn'də-krĭn, -krēn') A gland of the body that produces hormones and secretes them directly into the bloodstream. In mammals, the thyroid gland, adrenal glands, and pituitary gland, as well as the ovaries, testes, and the islets of Langerhans of the pancreas are endocrine glands.