Frozen Embryo Transfer

Frozen Embryo Transfer

Frozen embryo transfer – When the embryos after 2-5 days of culture are frozen with the help of liquid nitrogen to be transferred back in to the uterus in one of the later months and not the same cycle as that of ovum pickup is called a frozen embryo transfer.

For who? – women at risk of developing OHSS ( ovarian hyper-stimulation syndrome) in a fresh embryo transfer cycle, for women who produce 15 or more eggs after hormone stimulation, poor endometrial thickness(inner  lining of the uterus),  storage of surplus embryos ( extra embryos left after a fresh embryo transfer cycle) which can be used if the woman fails to conceive in a fresh cycle.



According to recent data, singleton pregnancies after a frozen cycle seem to have better perinatal outcomes than those after fresh transfer and the incidence of congenital malformations was not different between the two groups. Birth rates for these so-called ‘high responders’ who received frozen embryos were slightly higher than those who received fresh transfers.


Increased expenses , waiting time and having to take hormones in an additional cycle.

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