What embryo freezing means
During IVF, more than one embryo may develop. Suitable embryos that are not transferred can be frozen and stored for future use.
Modern freezing methods help preserve embryos at very low temperatures until a future frozen embryo transfer cycle.
Why it can be useful
Frozen embryos may allow another transfer attempt without repeating ovarian stimulation and egg retrieval. They can also be used when a fresh transfer is not ideal for safety or medical reasons.
Some patients freeze embryos before medical treatment, surgery, or planned delay in pregnancy.
Important decisions
Couples should understand storage policies, consent rules, future transfer planning, and what happens to embryos that remain unused.