Objective To examine the effects of subtle elevation in P levels in late follicular phase on the
outcome of IVF-ET cycles, using GnRH agonist (GnRH-a) and hMG±FSH protocol. Design A …

In IVF cycles using a GnRH agonist down-regulation short protocol, when the concentration
of P on day 4 of stimulation was> 3 ng/mL, patients experienced a significantly reduced …

OBJECTIVE: To investigate the occurrence of premature progesterone rise (PPR) in GnRH
agonist long or short protocol, address the relationship between circulating P levels and live …

Objective To investigate the effects of subtle rises in serum progesterone (P) during the
follicular phase on the outcome of in vitro fertilization and embryo transfer (IVF-ET). Design …

Objective: To gain insight into the physiologic as well as the clinical significance of
premature luteinization in the long gonadotropin-releasing hormone agonist (GnRH-a) …

Objective To determine if an increase in plasma P occurring before hCG administration
might impair the outcome of IVF-ET. Design Five hundred eighty-five IVF-ET cycles were …

STUDY QUESTION What is the proper way of assessing the effect of progesterone elevation
(PE) on the day of hCG on live birth in women undergoing fresh embryo transfer after in vitro …

Objective: Our purpose was to determine whether elevated progesterone (P) during
ovulation induction in IVF-ET cycles is a poor prognostic factor for achieving pregnancy …

STUDY QUESTION Are there any baseline predictors of progesterone elevation (PE) on the
day of human chorionic gonadotrophin (hCG) which are not associated with the intensity of …

OBJECTIVE: We investigated the influence of premature luteinization in in vitro fertilization
using a long protocol of gonadotropin-releasing hormone agonist (GnRHa) and recombinant …