Luteal phase progesterone excretion in ovulatory women with polycystic ovaries.

Background: Various studies have reported a prevalence of polycystic ovaries (PCO) of approximately 20% in the 'normal' population. Our aim was to investigate the frequency of ovulation and pattern of luteal phase progesterone secretion in a group of women with PCO who reported regular cycles and in whom ovulation had been established on the basis of previous investigations.

Methods: Subjects collected early morning urine samples for pregnanediol-3-glucuronide measurement from day 10 of the cycle to day 1 of their next menses.