Picture of gloved hand hoding a vial over liquid nitrogen, used in freezing
Text: Preimplantation Embryo Cryopreservation...
MIssouri Center for Reproductive Medicine & Fertility
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  • Cryopreservation is freezing of preemplantation embryos and storing them for later transfer to the uterus
  • Extra preimplantation embryos, created after IVF, can be cryopreserved (frozen) for transfer in another cycle
  • Preimplantation embyos created by IVF for a cancer patient before beginning her chemotherapy or radiation treatment can be stored by cryopreservation.
  • Freezing can be performed at either the fertilized egg stage or the blastocyst stage
  • Frozen embryo transfer (FET) cycles require less medication, minimal monitoring and are much less expensive than a fresh IVF cycle, while still providing good pregnancy rates.
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