IVF and Advanced Fertility Treatment
Cryopreservation of Embryos & Sperms
What is it?
It is a process of freezing extra embryo or sperms that are viable but not transferred into the womb during the month of treatment. Some couples are fortunate enough to collect a large number of embryos from one egg collection. Any remaining embryos or sperms may be frozen or cryopreserved in small tubes and kept in storage in the laboratory for future use.
How does it work?
The embryos may be kept in storage for several years. By transferring frozen-thawed embryos into the uterus, some patients have achieved 2-3 pregnancies in different years from just one egg collection.
When is it used?
Cryopreservation allows the patient to limit the number of embryos transferred "fresh" without discarding the unused embryos that could lead to a future pregnancy.