PROTEIN HORMONE By N., Sam M.S. - 4 Any hormone that is also a protein. i.e. prolactin and insulin. PROTEIN HORMONE: "Growth Hormone is an example of a protein hormone." Related Psychology Terms INSULIN SHOCK THERAPY HYPOGLYCEMIC STATES PITUITARY GLAND DIABETIC REACTIONS ADOLESCENCE (Theories) TROPIC HORMONE (TROPHIC HORMONE) GROWTH HORMONE (GH) PROLACTIN NEUROPEPTIDE GONADOTROPIN-RELEASING HORMONE (GNRH) Cite this page: N., Sam M.S., "PROTEIN HORMONE," in PsychologyDictionary.org, April 28, 2013, https://psychologydictionary.org/protein-hormone/ (accessed August 11, 2022).