Egg Freezing: What to Know Before You Decide

Egg freezing, also called oocyte cryopreservation, is a way to store unfertilised eggs for possible use in the future. People consider it for different reasons, including personal timing or a medical treatment that may affect fertility. It can preserve an option, but it cannot guarantee a future pregnancy or birth.

How does the process work?

The process usually begins with a consultation, review of medical history, and tests to help estimate how the ovaries may respond to stimulation. Hormone medicines are then used for a period of time, with monitoring by scans and sometimes blood tests. When the eggs are ready, they are collected in a planned procedure and frozen using a rapid-freezing method called vitrification.

If you decide to use the eggs later, they are thawed and fertilised in a laboratory, often using ICSI. Any resulting embryo that is suitable may then be considered for transfer. The future steps depend on the eggs, sperm, embryos, your health, and the clinic’s policies and local regulations.

What affects the chance of success?

Age at the time eggs are frozen is an important factor because egg quality changes with age. The number of eggs stored and how they survive thawing and fertilisation also matter. An ovarian reserve test may help estimate response to stimulation, but it cannot predict with certainty how many eggs will be collected or whether a future treatment will lead to a baby.

For these reasons, freezing eggs should not be presented as an insurance policy. Some people may need more than one stimulation cycle to store the number of eggs they hope for, while others may not be able or choose not to proceed. A specialist can discuss realistic expectations in the context of your age and health.

Questions worth asking

• What might the tests tell me, and what can they not predict?
• How many eggs might be collected in one cycle, and could more than one cycle be considered?
• What are the medication and procedure risks in my circumstances?
• What are the total costs, including storage and future use?
• What happens if I do not use the eggs, and what rules apply to storage and consent?

Egg freezing is a personal decision. Take time to understand the medical, financial, and emotional considerations and to ask about alternatives. If you are considering fertility preservation, contact ATG IVF Centre to discuss an individual consultation.

Further reading: HFEA: Egg freezing.