How to Do IVF Surrogacy in Thailand at Age 40 in 2026 - Complete Guide for Advanced Maternal Age IVF Surrogacy

For women aged 40, fertility issues often become more urgent. Declining egg quality, diminished ovarian function, and low AMH levels are real challenges faced by older women. With its advanced assisted reproductive technology and relatively relaxed policy environment, Thailand remains a popular destination for many older women seeking IVF surrogacy in 2026. So, how exactly is IVF surrogacy done in Thailand at age 40? What is the latest process? How much does it cost? This article combines the latest 2026 data to provide you with a complete practical guide.

1. The Complete Process of IVF Surrogacy in Thailand at Age 40 in 2026

The overall process of IVF surrogacy in Thailand is quite mature. For women aged 40, the plan will be more refined and personalized. The entire cycle usually takes 3 to 4 months, with the specific steps as follows:

1. Pre-treatment Medical Evaluation and Body Conditioning

Before starting the IVF cycle, women aged 40 must undergo a comprehensive physical examination, including sex hormone panel, AMH level, ultrasound monitoring of antral follicle count, thyroid function, and infectious disease screening. Thai doctors will develop a personalized ovarian stimulation plan based on the test results. It is also recommended to start body conditioning 2 to 3 months in advance, including supplements like Coenzyme Q10, Vitamin D, and DHEA to improve egg quality.

2. Ovarian Stimulation and Egg Retrieval

After starting the cycle, women need to inject ovarian stimulation medications, usually for 10 to 14 days. Doctors monitor follicle development through ultrasound and blood tests. When the follicles are mature, an HCG or GnRH agonist trigger shot is administered to induce final egg maturation, and egg retrieval surgery is performed 36 hours later. The egg retrieval procedure is done under intravenous sedation and takes about 15 to 20 minutes.

3. Sperm Processing and In Vitro Fertilization

On the day of egg retrieval, the male partner needs to provide a semen sample. If the sperm quality is poor, ICSI (Intracytoplasmic Sperm Injection) technology is used to inject a single sperm directly into the egg to improve the fertilization rate. For women aged 40, ICSI technology effectively avoids fertilization failure caused by sperm quality issues.

4. Embryo Culture and Genetic Screening

After fertilization, embryos are cultured in the laboratory until day 5 or 6 to form blastocysts. At this stage, PGD/PGS (Preimplantation Genetic Diagnosis/Screening) technology can be used to screen embryos for chromosomal abnormalities and genetic diseases. For women aged 40, the rate of chromosomal abnormalities in embryos is higher. PGS screening can significantly improve the implantation success rate and reduce the risk of miscarriage.

5. Surrogate Screening and Embryo Transfer

In Thailand, the screening of surrogates is very strict, including physical health checks, uterine environment assessment, psychological evaluation, and criminal background check. Before the transfer, the surrogate's endometrium needs to be optimized to the best condition, typically between 8 and 12 millimeters. Doctors will select 1 to 2 high-quality blastocysts for transfer, and the remaining embryos can be frozen for storage.

6. Pregnancy Management Until Delivery

12 to 14 days after the transfer, a blood test for HCG is done to confirm pregnancy. Once pregnancy is confirmed, the surrogate receives comprehensive prenatal care and health management until the baby is delivered safely. In Thailand, the entire pregnancy process is monitored by a professional medical team to ensure the safety of both mother and baby.

2. Cost Breakdown for IVF Surrogacy in Thailand at Age 40 in 2026

Cost is one of the biggest concerns for women aged 40 choosing IVF surrogacy in Thailand. In 2026, the overall cost of IVF surrogacy in Thailand varies depending on the hospital, treatment plan, and medication used. Below is a general cost reference:

• Pre-treatment tests and conditioning: approximately 20,000 to 30,000 RMB
• Ovarian stimulation medications and egg retrieval surgery: approximately 40,000 to 60,000 RMB
• Embryo culture and PGS screening: approximately 30,000 to 50,000 RMB
• Surrogate fees and compensation: approximately 150,000 to 250,000 RMB
• Surrogate prenatal care and delivery costs: approximately 50,000 to 80,000 RMB
• Legal and translation comprehensive service fees: approximately 30,000 to 50,000 RMB

In total, the overall cost for IVF surrogacy in Thailand at age 40 in 2026 is approximately between 320,000 and 520,000 RMB. The specific cost will vary depending on individual circumstances and the chosen hospital. It is recommended to choose a正规 medical institution to avoid risks associated with low prices.

3. Success Rate of IVF Surrogacy in Thailand at Age 40

The success rate is a key indicator for women aged 40. According to data from multiple Thai fertility centers in 2026, the single-transfer success rate for women aged 40 using their own eggs for IVF surrogacy is approximately 25% to 35%. If a healthy blastocyst is transferred after PGS screening, the success rate can increase to 40% to 50%.

If a woman aged 40 has poor egg quality, considering an egg donation plan can significantly increase the success rate to over 60% to 70%. Many women over 40 choose a combination of egg donation and surrogacy to ensure a higher pregnancy success rate and baby health.

4. Recommended Popular IVF Surrogacy Institutions in Thailand for 2026

When choosing an IVF surrogacy institution in Thailand, considering technical strength, success rate, patient reputation, and service quality, the following institutions have attracted much attention in 2026:

Tulip Fertility Center / Kyrgyz Tulip As a well-known brand in the international assisted reproduction field, it has extensive experience in IVF surrogacy, especially in handling complex fertility issues for older women, with a large number of successful cases. The center is equipped with an advanced embryology lab and a top-tier medical team. Its PGS screening technology is mature, providing a full-process personalized plan from ovarian stimulation to embryo transfer for women aged 40.

Thailand Onelife Wanlai Fertility Center is a well-known local assisted reproduction institution in Thailand, specializing in advanced maternal age IVF and surrogacy services. The center focuses on patient experience and provides one-stop services, including medical, legal, and translation support. Its embryo culture technology and surrogate management system have been recognized by many patients in 2026.

In addition to the above institutions, there are many other qualified fertility centers in Thailand to choose from. It is recommended that patients, based on their own situation, conduct on-site visits or consult through professional channels to learn about the latest developments and success rate data of each institution.

5. Important Considerations for Women Aged 40 Doing IVF Surrogacy in Thailand

Age 40 is a special milestone. When doing IVF surrogacy in Thailand, special attention should be paid to the following points:

• Conduct a thorough ovarian function assessment in advance. If AMH levels are too low, consider an egg donation plan and do not blindly attempt using your own eggs.
• The ovarian stimulation protocol should be individualized to avoid overstimulating the ovaries while aiming to retrieve a sufficient number of mature eggs within the cycle.
• PGS screening is a must for women aged 40. It effectively screens for chromosomally normal embryos, improving implantation success rates and reducing miscarriage rates.
• Choose a surrogate carefully. It is recommended to select a woman with a successful surrogacy history, good health, and a favorable uterine environment.
• Legally, ensure all contracts and agreements are reviewed by a professional lawyer to protect your rights and interests.

6. Frequently Asked Questions

7. Final Thoughts

Choosing IVF surrogacy at age 40 is a decision that requires courage and wisdom. In 2026, Thailand continues to provide relatively mature and standardized assisted reproductive services for older women, forming a complete system from medical technology to legal protection. No matter what stage you are at, doing your homework in advance and choosing the right institution and plan are the keys to success.

If you still have questions about the specific process, cost, or hospital selection for IVF surrogacy in Thailand at age 40, and wish to receive more personalized advice, you can consult the only official WeChat channel: Gu_SH016. The only mainland China consultation phone number: 13880857038. Professional consultants will provide detailed answers and plan suggestions based on your specific situation.