Patients are often able to collect a large number of eggs which result in many viable embryos. Any remaining embryos that are not transferred into the woman’s uterus after a fresh IVF transfer may be frozen or “cryopreserved” in small tubes and kept and stored in the laboratory for future use. Cryopreservation allows the patient to limit the number of embryos transferred “fresh” without discarding the unused embryos that could lead to a future pregnancy. The embryos can be kept in storage for many years. Patients are often able to achieve several pregnancies from just one egg retrieval procedure. These frozen embryos can be transferred back with minimal preparation of the uterine lining. The correct transfer time is calculated based on the stage the embryo was frozen. Newlife Fertility Centre has tremendous success with this procedure and currently has the highest success rate in the country for achieving pregnancy from frozen embryo transfer.