Luteal Function after Ovulation Induction

Urinary steroid profile in early pregnancy after in vitro fertilization

“…The increased level of pregnanediol is obviously connected to the progesterone production. The most likely reason for the stable high progesterone levels is that the IVF induction methods result in multiple luteinized follicles (15). Johnson et al (16,17) measured high concentrations of progesterone during the first trimester, while Csapo et al proved the importance of progesterone during the first weeks of pregnancy (18).…”