Embryo Freezing

Fortis Fertility – Embryo Freezing

Fortis hospital is proud to offer the most comprehensive embryo freezing technology in Bangalore. With our team of experienced doctors and latest cryopreservation techniques, Fortis is the preferred destination for embryo freezing in Bangalore.

Embryo freezing is a procedure wherein surplus good quality embryos are frozen for future use. It is a part of the In Vitro Fertilization (IVF) process of fertilizing the egg outside the womb. Embryo freezing is also referred to as Cryopreservation. On an average 15 – 20% of couples will be in a position to freeze the surplus embryos.


In an average IVF, multiple eggs are formed in the ovary through the use of hormone injections. The eggs are retrieved with the help of an ultrasound guided process. They are then mixed with the sperm for fertilization. Once fertilized, the eggs are left in the petridish in the laboratory to divide and form early embryos. Finally, one or more embryos are inserted back into the uterus.

The leftover embryos, if viable and good quality, can be frozen for use in future conception. This freezing or cryopreservation can be done between the 1st and 5th day after egg retrieval.

Why freeze embryos?

Under cryopreservation, only high-quality embryos are frozen. These can be frozen for up to 10 years. By freezing excess embryos, couples are able to conceive a child in the future using the frozen embryos.

The doctor may advise you to freeze embryos under the following circumstances:

  • If surplus good quality embryos are available after transferring embryos in the fresh IVF/ ICSI cycle
  • If you show symptoms of Ovarian Hyperstimulation Syndrome (OHSS) – this condition necessitates freezing of all embryos and deferring the embryo transfer for a couple of months
  • Embryos may also be frozen if there is fluid in the endometrial cavity around the time of embryo transfer
  • If there is any medical condition that merits only a single embryo transfer (mSET) to avoid risk to the woman’s life
  • If the couple electively choose to have a Single embryo transfer (eSET) to avoid the risk of multiple pregnancy

The benefits of using frozen embryos include:

  • Cumulative increase in pregnancy rate
  • Reduced number of times the ovaries need to be stimulated by fertility drugs
  • Reduced number of hospital visits for egg pick-up procedures
  • Reduced cost of subsequent pregnancy

Frozen Embryo Transfer (FET)

Frozen Embryo Transfer (FET) is a procedure involving the thawing of frozen embryos and their subsequent insertion back into the uterus. Approximately 70 – 75% of frozen embryos survive the thawing process.

Things to remember

Though cryopreservation doesn’t carry any risks per se, a couple of things need to be kept in mind.

  • The live birth rate from frozen embryos is slightly less than that from fresh embryos
  • Unused frozen embryos may be donated to another couple or may be used for laboratory research to further scientific knowledge, if no further pregnancy is desired
  • Unused frozen embryos may also be discarded in certain cases


Click To Call