Effects of E2, P4 and LH Levels on the Day of Transfer and Endometrial Cavity Thickness on Implantation Success in Patients With Frozen-thawed Embryo Transfer Cycle

Thanks to recent advances in clinical practice and laboratory, embryo cryopreservation has become the first-line procedure in assisted reproductive technology. Embryo freezing process; Prevention of ovarian hyperstimulation syndrome is becoming an accepted practice for a growing number of indications, including preimplantation genetic testing (PGT), late follicular phase progesterone elevation, and embryo-endometrial asynchrony. Progesterone; plays a key role in the preparation of the endometrial cavity for embryo attachment. Supplementary progesterone preparations can be used to prevent luteal phase defects and provide progesterone support during cycle preparations for frozen-thawed embryo transfer. Our aim in this study is to show the effect of serum progesterone level on pregnancy outcomes on the day of embryo transfer.