text_1: 32-year-old nulliparous female.  Amenorrhea (no galactorrhea) for 4 months.  Pregnancy test negative, did workup, prolactin elevated to 90.  (1)  What is the recommended further evaluation of this elevated prolactin?  (2)  Leave it alone?  Image? (3)  If she doesn't want to get pregnant, can I use the elevated prolactin as a reliable form of birth control and tell the patient she doesn't need to use condoms or be on the pill?  (4)  How often to check prolactin level?
text_2: What is the recommended evaluation of an elevated serum prolactin?