Embryo freeze & FET

At Repromed our scientists will freeze any good quality embryos following your fresh embryo transfer. These embryos will remain in storage until you would like them thawed and transferred, a procedure known as a frozen embryo transfer (FET). Due to higher survival rates Repromed freezes all embryos at the blastocyst stage (day 5 and/or 6) using a fast freeze technique termed vitrification.

What is vitrification?

Vitrification is an ultra rapid freeze method that bypasses ice crystal formation. Vitrification is reported to be a superior method of freezing than conventional slow freezing where survival rates range from 70-80% giving rise to increased rates in pregnancy outcome.

Frozen embryo transfer (FET)

During your fresh IVF cycle your embryos will be monitored daily where, following your transfer, on day 5 and/or 6 surplus good quality embryos will be frozen. When these embryos are used in any subsequent treatment cycles, frozen embryo transfer (FET), blood tests will be needed to time ovulation and then coordinate the age of your embryos with the development of the uterine lining. This ensures that the embryos are transferred into the uterus at the time that the endometrium is most receptive for implantation.

Advantages to FET:

  • If you ovulate naturally no drugs are required on a frozen embryo transfer cycle resulting in a simpler, more natural cycle of treatment.
  • It is less costly than another fresh IVF cycle.

Transferring embryos between clinics

Transferring frozen embryos between clinics is a very simple process. If you have embryos stored at a different clinic but would like treatment at Repromed please get in touch with us.