Prolactin is a hormone produced by the pituitary gland. The pituitary is a small organ at the base of the brain. Prolactin’s main function is to produce milk after childbirth.
It is also linked with fertility, menstruation, fat metabolism, fluid regulation, and sexual satisfaction in both men and women. An abnormal level does not necessarily signify a problem if you have no symptoms.
Read more about the prolactin blood test.