P-368 Serum progesterone on the day of embryo transfer in stimulated cycles does not correlate with pregnancy outcomes

Abstract

Study question Is the chance of positive hCG, clinical pregnancy or live birth in a fresh embryo transfer (ET) IVF cycle, affected by day of transfer serum progesterone (P4) level? Summary answer There is no correlation between P4 level on the day of ET and pregnancy outcomes. What is known already Data from studies of frozen–thawed embryo transfer cycles suggest that low as well as high P4 levels during the mid-luteal phase may decrease the chance of pregnancy. The altered P4 pattern may disrupt the endometrial maturation leading to asynchrony between embryonic development and endometrial receptivity, thereby, compromising implantation and early development of pregnancy. Study design, si..