<prompt> Peak level of plasma progesterone in the luteal phase :1ngml10ngml15ngml30ngml  <response>: Serum values of Progesterone : Follicular Phase: 1 ngml Midluteal phase: 5-15 ngml day 22nd of menstrual cycle Reference: Clinical Endocrinologic Gynecology and Infeility, Eighth edition; Chapter 6 