TY - JOUR AU - Bakkensen, Jennifer B. AU - Racowsky, Catherine AU - Thomas, Ann M. AU - Lanes, Andrea AU - Hornstein, Mark D. PY - 2020 DA - 2020/07/01 TI - Intramuscular progesterone versus 8% Crinone vaginal gel for luteal phase support following blastocyst cryopreserved single embryo transfer: a retrospective cohort study JO - Fertility Research and Practice SP - 10 VL - 6 IS - 1 AB - The optimal route of progesterone administration for luteal support in cryopreserved embryo transfer (CET) has been the subject of much debate. While most published research has pertained to day 3 transfers, recent data on blastocyst CET has suggested that intramuscular progesterone (IMP) is superior to twice daily vaginal Endometrin suppositories for luteal phase support, resulting in significantly higher ongoing pregnancy rates. This study aimed to determine whether IMP is similarly superior to 8% Crinone vaginal gel for luteal phase support following blastocyst CET. SN - 2054-7099 UR - https://doi.org/10.1186/s40738-020-00079-y DO - 10.1186/s40738-020-00079-y ID - Bakkensen2020 ER -