Embryo Freezing

Embryo Freezing (Cryopreservation) is the process of freezing embryos at a very low temperature so that they can be thawed and used later. IVF success rates with frozen embryos are very high at FTC because of our Day 4 ET (embryo transfer) protocol, which may allow couples multiple chances to achieve pregnancy from a single oocyte retrieval cycle. During a traditional cycle of IVF, we usually transfer 2 embryos to the uterus to maximize the chance of conception while minimizing the likelihood of multiple births. If pregnancy does not occur during the stimulated cycle, the frozen embryos may be thawed and transferred to the uterus during a spontaneous menstrual cycle. If conception does result from the initial stimulated cycle, cryopreserved embryos can be used later in an attempt to achieve another pregnancy.