Peak level of plasma progesterone in the luteal phase :: (A) 1ng/ml, (B) 10ng/ml, (C) 15ng/ml, (D) 30ng/ml
Answer is C. Serum values of Progesterone : Follicular Phase: < 1 ng/ml Midluteal phase: 5-15 ng/ml (day 22nd of menstrual cycle) Reference: Clinical Endocrinologic Gynecology and Infeility, Eighth edition; Chapter 6