Embryo cryopreservation (Vitrification) & Frozen Embryo Transfer (FET)

Embryo cryopreservation is a process of freezing the good embryos to preserve them at sub-zero temperatures for future use if the first effort of IVF fails or for a second pregnancy. As a result, the woman might have a fresh embryo transfer without taking any medicines. In the event of PGD or PGS to blastocysts, embryo cryopreservation is required. After PGD or PGS, the blastocysts are frozen and used by the couple the following month. Furthermore, in the circumstance of ovarian hyper stimulation syndrome, or for some other medical reason (e.g to get sick) embryo cryopreservation is required. In this situation, the embryo transfer must occur during the woman’s subsequent cycle.