Embryo Freezing Explained: Process, Benefits and Success Rates
If you are looking into fertility treatments, you may have heard about embryo freezing. It is one of the biggest steps forward in helping people have babies. Whether you want to delay having a child, need treatment for an illness, or are going through IVF, knowing how embryo freezing works can help you make the right choice for your future.
In this blog, you will learn about the process, benefits, and success rate of embryo freezing as well as know more about Orchid Fertility Center.
What Is Embryo Freezing?
Embryo freezing, also called embryo cryopreservation, is the process of fertilising eggs in a lab and storing the resulting embryos at very low temperatures for later use. Unlike egg freezing, where only the egg is stored, embryo cryopreservation stores embryos that are already fertilised and ready to be used when you need them.
This process lets people store embryos for years without rushing into pregnancy right after an IVF cycle.
The Embryo Freezing Process: Step by Step
Here is how the embryo freezing process works, in simple steps:
1. Ovarian Stimulation You take hormone injections for 10–14 days to help your ovaries produce more eggs than usual. The doctor checks your progress with scans and blood tests.
2. Egg Collection When the eggs are ready, a doctor collects them using a small procedure done under light sedation. It is quick and low-risk.
3. Fertilisation The eggs are mixed with sperm in the lab. This can be done by placing them together or by injecting a single sperm into each egg (called ICSI).
4. Embryo Growth and Selection The fertilised eggs grow in the lab for 3–6 days. The lab team picks the healthiest ones for freezing.
5. Flash Freezing (Vitrification) Modern embryo cryopreservation uses a method called vitrification. The embryos are frozen very quickly to avoid damage. They are stored in liquid nitrogen at –196°C and can stay there safely for many years.
Frozen Embryo Transfer: What to Expect
A freezing embryo transfer is when a stored embryo is thawed and placed into the womb. It is a simple and quick procedure.
Before the freezing embryo transfer, your doctor will prepare the lining of your womb using hormones or by tracking your natural cycle. Once ready, the embryo is thawed and placed into the womb through a thin tube. Most people say it feels like a mild cramp, nothing too uncomfortable.
Because the body is not undergoing intensive hormone treatment at this stage, the womb is often better positioned to receive the embryo, which can lead to good results.
Embryo Freezing Success Rates
Embryo freezing success rates have increased significantly in recent years. After thawing, more than 90–95% of frozen embryos survive. The chance of having a baby from a frozen embryo transfer depends on age:
- 40–50% for women under 35
- 30–40% for women aged 35–37
- 20–30% for women aged 38–40
- 10–20% for women over 40
In many cases, frozen transfers work just as well as, or even better than, fresh ones.
Egg Freezing vs Embryo Freezing: Key Differences
Many people wonder about egg freezing vs embryo freezing, which one should they choose?
Egg freezing stores eggs before they are fertilized. It is a good option if you do not have a partner yet or want to keep your choices open.
Embryo freezing stores eggs that have already been fertilized with sperm. It is usually chosen by couples going through IVF together.
When comparing egg freezing vs embryo freezing, embryos tend to survive the thawing process a little better than eggs. But egg freezing has improved significantly and works well for many people.
Your doctor can help you decide which option best suits your situation.
Benefits of Embryo Freezing
- Saves your fertility before age, illness, or surgery affects it
- Cuts down on the number of IVF cycles you may need
- Let’s help you choose the right time to try for a baby
- Lowers the risk of twins or triplets by transferring one embryo at a time
- Gives you peace of mind if you are not ready to have a baby right now
Why Choose Orchid Fertility?
Orchid Fertility believes in providing everyone with a fair opportunity to become a parent. Our staff can help and provide guidance along the way, whether we are in the very beginning of exploring options or you are ready to start with treatment.
We use the latest embryo cryopreservation technology to make sure your embryos are frozen and stored safely. Our lab follows the highest standards of care, and our experienced fertility specialists work closely with each patient to create a plan that fits their unique needs.
If you are thinking about embryo freezing, whether to plan for the future or as part of an IVF cycle.
FAQs
1. How much does it cost to freeze embryos in India?
On average, the cost of embryo freezing will be between Rs 80,000 – Rs 150,000 (for one cycle) depending on your location and the fertility clinic you choose. Storage fees are typically paid once a year and vary from Rs 10,000 – Rs 20,000 per year depending on the facility.
2. What Is the Difference Between Egg Freezing and Embryo Freezing?
Egg freezing stores eggs before fertilisation. Embryo freezing stores eggs that have already been fertilised with sperm. Embryos tend to survive thawing better. Egg freezing is better if you do not have a partner yet; embryo freezing is the common choice for couples doing IVF.
3. How Long Can Frozen Embryos Be Stored?
Frozen embryos can be stored for many years. In fact, a healthy baby was born from an embryo frozen for 27 years. As long as they are stored properly in liquid nitrogen, embryos stay safe indefinitely.
