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How We Decide On Which Day To Transfer Your Embryos Dr Saiprasad Gundeti, Senior Embryologist, Malpani Infertility Clinic

Embryo transfer represents the final stage of the IVF treatment and is the climax of the IVF treatment cycle. How do we decide on which day to transfer your embryos ? Day 2 ? 3 ? 5 ? Which is better ? and why ?

Unfortunately, human reproduction is not a very efficient enterprise. This is true in the bedroom as well as the clinic, and most embryos do not become babies. This is because many embryos have a genetic error ( which is often random) and will not implant, because Nature will prevent them from doing so. This is why the implantation rate even for top quality embryos is about 40%.

So how do we select the top quality embryo to maximize your chances of success ? And how do we decide which day to transfer it ? And how may do we transfer ? All complex questions, which IVF clinics need to deal with daily !

Many clinics which don't have a good lab will transfer embryos on Day 2 or 3. To add insult to injury, they will transfer more embryos into the uterus, in order to maximise the chances of success. This is why their patients end up with multiple pregnancies - an iatrogenic complication of IVF, which increases the risk of babies having birth defects because of premature births !

Embryo Transfer on Day 5

Top Quality Day 5 Embryo

  • The basic requirement to do a Day 5 Embryo Transfer is a good quality lab !
  • Can consider Single Embryo Transfer effectively.
  • Top quality Embryo can be selected to transfer, which will a have high probability of implanting in your uterus.
  • Can transfer 1 Top Quality embryo, thereby reducing the chances of multiple pregnancy.

The spare top quality blastocysts can be frozen, and used for the next cycle !

Authored by : Dr Aniruddha Malpani, MD and reviewed by Dr Anjali Malpani.