Chapter 1 of 4
Understanding Embryo Freezing
Chapter 1 of 4
Understanding Embryo Freezing
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What Is Embryo Freezing?
Embryo freezing, or embryo cryopreservation, is a process of freezing fertilised eggs (embryos) for future use. The embryos are stored at ultra-low temperatures, preserving their viability for years.
It’s a good option if you’re planning to delay pregnancy for personal, medical, or career reasons.
Embryo freezing is also commonly recommended as part of IVF when you’ve created extra embryos and want to save them for future cycles.
References: Springer Nature Link. (2023). Atlas of Assisted Reproductive Technologies - Cryopreservation., National Library of Medicine (NLM). (2014). Cryopreservation of embryos and oocytes in human assisted reproduction.
Embryo freezing, or embryo cryopreservation, is a process of freezing fertilised eggs (embryos) for future use. The embryos are stored at ultra-low temperatures, preserving their viability for years.
It’s a good option if you’re planning to delay pregnancy for personal, medical, or career reasons.
Embryo freezing is also commonly recommended as part of IVF when you’ve created extra embryos and want to save them for future cycles.
Your embryo freezing journey begins with ovarian stimulation, where hormones help your ovaries produce multiple eggs.
We then retrieve these eggs, fertilise them with sperm in a lab, and allow them to develop into embryos.
The highest-quality embryos are frozen using vitrification, a rapid freezing method that prevents ice crystal formation and keeps them safe for future use.
You might be wondering about the differences between embryo freezing and egg freezing. While they’re similar, there’s a key distinction: embryo freezing involves fertilising the eggs before freezing, while egg freezing preserves unfertilised eggs.
Embryo freezing is often chosen by couples, while egg freezing is more common among single women. Both options have their pros and cons, so the right choice depends on your goals.
Embryo freezing can be a great option if you’ve undergone IVF and have created multiple embryos that you’d like to preserve for future cycles.
It’s also a helpful choice if you’re managing a medical condition that may affect your fertility or planning to delay parenthood.
Speak to your fertility specialist to help you decide if embryo freezing is right for you. If you’re unsure where to start, you can also speak to our care navigators under the Navigate section to find the right clinic and doctor for your needs.
Embryos can remain frozen for many years without losing their quality. Thanks to advances in cryopreservation techniques, they can be stored for decades and still lead to successful pregnancies.
However, storage limits may vary depending on clinic policies or local regulations, so it’s important to check the rules in the country where you plan to pursue treatment.
More and more people are choosing to freeze their eggs or embryos for future use. Embryo freezing generally has higher success rates than egg freezing, as embryos are more developed and tend to survive the thawing process better.
However, egg freezing offers more flexibility if you’re not yet sure about your future partner. Discuss both options with your doctor to make an informed decision that fits your goals.
Both egg freezing and embryo freezing are good options for preserving your fertility. If you’re in a committed relationship or using donor sperm, embryo freezing might be the better choice.
On the other hand, egg freezing may be more suitable if you’re single or want to keep your options open. Consider your future plans and speak with your fertility specialist for personalised advice.
