Plasma prolactin in women with mastodynia.

Plasma prolactin was measured by radioimmunoassay during the luteal phase in 22 patients affected by moderate or severe mastodynia and results were compared to those of 43 control subjects. No consistent changes were seen during the course of the luteal phase in either group. No significant differences were noted between the prolactin levels of the two groups. No association was found between moderate or severe mastodynia and variations of plasma prolactin levels.