<prompt> True about prolactin is all exceptPrimary hypothyroidism is associated with mild elevation in serum prolactinNormal prolactin level is less than 20ngmL in non-pregnant womenHyperprolactinema causes reflex increase in central dopamine levels which causes MenorrhagiaDopamine agonists decrease prolactin secretion  <response>: Hyperprolactinemia reflex increase in dopamine acts on dopamine receptors on ovaries Disrupts Folliculogenesis Amenorrhea. 