Embryo Freezing in Thailand: Process, Costs, and Considerations

Embryo freezing is a common part of IVF treatment that allows you to store embryos for future use. In Thailand, many international patients choose to freeze embryos to preserve fertility, plan family spacing, or have embryos available for genetic testing. This guide explains why embryos are frozen, how the vitrification process works, and what to consider about storage. Since costs and policies vary, you will need to confirm specific details with your chosen clinic.

Why Freeze Embryos?

There are several reasons you might consider embryo freezing as part of your IVF journey:

• Preserve fertility: Freezing embryos can help preserve your ability to have children in the future, especially if you are delaying parenthood or facing medical treatments that could affect fertility.
• Genetic testing: If you plan to have preimplantation genetic testing (PGT), embryos are often biopsied and then frozen while the results are analyzed. This allows for a frozen embryo transfer (FET) in a later cycle.
• More than one child: If you produce more embryos than you need for one transfer, you can freeze the extra embryos for future attempts or for expanding your family.
• Medical reasons: If your uterine lining is not ready for transfer, or if you have a medical condition that makes a fresh transfer inadvisable, freezing embryos allows you to wait for a more suitable time.

How Embryo Freezing Works: Vitrification

Modern embryo freezing uses a technique called vitrification. This is a rapid cooling process that turns the embryo into a glass-like state without forming ice crystals, which can damage cells. Vitrification has greatly improved survival rates compared to older slow-freezing methods.

The process typically involves the following steps:

1. Embryo development: After fertilization, embryos are cultured in the laboratory for several days. They may be frozen at the cleavage stage (day 2 or 3) or at the blastocyst stage (day 5 or 6). Blastocyst freezing is more common because it allows for better selection of viable embryos.
2. Biopsy (if applicable): If you are having PGT, a few cells are removed from the embryo for testing. This usually happens at the blastocyst stage.
3. Cryoprotectant exposure: The embryo is placed in a solution that protects it during freezing.
4. Rapid cooling: The embryo is plunged into liquid nitrogen at very low temperatures, causing it to solidify instantly.
5. Storage: The embryo is stored in a tank of liquid nitrogen at the clinic’s laboratory.

When you are ready to use the embryos, they are thawed and transferred to your uterus in a frozen embryo transfer (FET) cycle. Not all embryos survive the freeze-thaw process, but with vitrification, survival rates are generally high.

Considerations Before Freezing Embryos

Before you decide to freeze embryos, there are several factors to think about:

• Legal and ethical considerations: Embryo freezing involves decisions about the disposition of embryos in case of divorce, death, or if you no longer wish to use them. You will likely need to sign consent forms outlining your wishes.
• Storage duration: Embryos can be stored for many years, but there may be limits on how long a clinic can store them. You should ask about the maximum storage period.
• Success rates: The chance of a live birth from a frozen embryo depends on the quality of the embryo and your individual circumstances. Your clinic can provide you with their own data.
• Costs: Embryo freezing involves initial fees for the freezing process, as well as ongoing annual storage fees. These costs vary by clinic.

Embryo Freezing Costs in Thailand

The cost of embryo freezing in Thailand includes several components:

• Initial freezing fee: This covers the laboratory work and materials used in the vitrification process.
• Annual storage fee: This is a recurring fee to keep your embryos in liquid nitrogen. It is usually charged per year.
• Thawing and transfer fee: When you decide to use your embryos, there will be a fee for thawing and transferring them.

Exact prices are not published here because they vary widely between clinics and depend on the number of embryos frozen and the length of storage. It is essential to ask your clinic for a detailed price list, including any additional charges that may apply.

Questions to Ask Your Clinic

When you consult with a fertility clinic in Thailand about embryo freezing, consider asking the following questions:

• What is the total cost for the initial freezing, and what does it include?
• What is the annual storage fee, and is it billed in advance?
• How long can embryos be stored at your clinic?
• What is your laboratory’s experience with vitrification and thawing?
• What are your success rates for frozen embryo transfers?
• What are the legal requirements for embryo disposition in Thailand?
• What happens to my embryos if the clinic closes or I move?

Next Steps

If you are considering embryo freezing as part of your IVF treatment in Thailand, here is a simple checklist to guide you:

1. Research fertility clinics that offer IVF and embryo freezing. You can start with our IVF in Thailand guide.
2. Schedule a consultation to discuss your medical history and fertility goals.
3. Ask for a detailed breakdown of all costs, including storage fees.
4. Clarify the legal and consent procedures for embryo storage.
5. Understand the timeline for your treatment, including when embryos will be frozen and when you can plan a transfer.

For more information on the overall IVF process, see our treatment process page. If you are an international patient, you may also find our international patient guide helpful. To learn more about the costs associated with storing embryos, visit our embryo storage cost page.

Frequently asked questions

How long can embryos be frozen in Thailand?

The maximum storage duration for embryos in Thailand can vary by clinic and may be subject to legal limits. It is important to ask your clinic about their specific storage policies and any time limits that may apply.

What is the success rate of frozen embryo transfers?

Success rates for frozen embryo transfers depend on many factors, including the age of the woman, the quality of the embryos, and the clinic's expertise. Your clinic can provide you with their own success rates, but there is no guarantee of pregnancy or live birth.

Are there any risks associated with embryo freezing?

Embryo freezing is generally considered safe. The main risk is that not all embryos will survive the freeze-thaw process, but with modern vitrification, survival rates are high. There is no known increase in birth defects or developmental issues in children born from frozen embryos.

Can I freeze embryos if I am not doing IVF?

Embryo freezing is always part of an IVF cycle because embryos are created through fertilization in the laboratory. If you are not ready to undergo IVF, you may consider egg freezing instead, which involves freezing unfertilized eggs.

Continue your research

• Embryo storage cost and contract guide
• IVF in Thailand guide
• Treatment journey

Medical information notice: This article is educational and does not replace individual assessment, diagnosis, genetic counselling or treatment advice from a licensed clinician. Provider services, availability, fees and policies should be verified directly before booking.