Time-Lapse (TL) Culture System in IVF
Benefits of Frozen Embryo Transfer (FET)
- Fresh Embryo Transfer (ET) Fresh ET is the transfer of embryos that are formed 3 or 5 days after oocyte pick up (OPU) during fresh IVF cycle.
- Frozen Embryo Transfer (FET) FET uses frozen embryos for transfer. Similar to fresh cycle, fertilised embryos are cultured until day 3 or day 5. Depending on the quality of the embryo, slow developing embryos may need to be cultured to day 6 or day 7 in order to form blastocysts. Those embryos that the embryologists deemed as freezable grade are frozen. This would mean that embryos which are able to survive the freezing and thawing process will be frozen. Poor quality embryos will not survive the harsh freezing and thawing process. All freezable grade embryos are frozen and stored for future implantations.