Preovulatory progesterone concentration associates significantly to follicle number and LH concentration but not to pregnancy rate
Using data from a large prospective randomized controlled trial that evaluated the effect of recombinant LH (rLH) co-administration for ovarian stimulation, the present study assessed whether progesterone concentration on the day of human chorionic gonadotrophin (HCG) administration was associated with pregnancy outcome. Progesterone concentration was measured on stimulation day 1 and on the day o