Progesterone Variation on the Final Day of Oocyte Maturation.

The current study, aims through a robust design to provide a simple answer on whether progesterone levels of the same individual may significantly vary depending on the time of blood retrieval before the ovulation triggering, by evaluating the daily variability of serum progesterone on the day of triggering in healthy women who perform a COS for oocyte donation, through multiple blood samplings.