A method of preserving or freezing is called embryo freezing, which can be used in the future. Let's see what is an embryo. Ungrown or early development stage of any organism is known as embryo.
Embryo freezing (cryopreservation) is carefully cooling them to very low temperatures (-196oC). This method will be processed in the laboratory using specialized freezing equipments and safely stored in liquid nitrogen.
Woman's ovaries are stimulated to produce many eggs in the IVF treatment, and the best ones are selected for the fertility treatment, rest will be freezed for the future use, incase of multiple good embryos are found. In the future ovaries need not be stimulated for the IVF treatment again, as the embryos are already freezed. On a average 75% of embryos will survive the freeze cycle. There are stories of 10 year frozen embryos have generated successful pregnancies (depends on the quality of the embryo). Unused stored embryos are also great source of stem cells.
Each embryos are stored in a pre-labelled ,colour coded straws along with the identification information. Hence it can be easily tracked and monitered. The frozen embryos are tracked 365 days a year,and physically checked for any problems by the Embryologists.
Generally, no one knows what the maximum storage period might be. The procedures for human embryo freezing were developed in 1984 and only went into widespread use in the late 1980s. So, the longest time a human embryo had been stored is around 25-30 years and, typically, patients that have left embryos in storage for this long usually don't come back for them. Some patients have come back after 10-12 years and the embryos have been thawed successfully and created healthy babies.
Embryo freezing is a gift by the science for childless couple for assisted reproductive technology. AMH-Anti Mullarian harmone test is been conducted to know the reserve of embryos in the ovary. Hence the individual can take a call whether this savings can be done now or in the near future.
The time to start working toward a healthy pregnancy is before you conceive. If you are trying to get pregnant quick