Thailand 40-Year-Old IVF Surrogacy Guide Cycle

For 40-year-old women choosing IVF surrogacy in Thailand, the main concerns are how the cycle is arranged, the cost, and the success rate. In 2026, assisted reproductive technology in Thailand continues to upgrade, with the普及率 of third-generation IVF further increasing, providing more fertility possibilities for older women. The following provides a complete guide that can be directly referenced and operated, covering five dimensions: cycle process, technological advantages, cost composition, hospital selection, and success rate.

1. Complete Cycle Process for 40-Year-Old IVF Surrogacy in Thailand

For a 40-year-old woman undergoing IVF surrogacy in Thailand, the entire cycle typically takes 60 to 75 days, divided into two phases: domestic preparation and execution in Thailand. In 2026, most fertility centers in Thailand adopt personalized ovarian stimulation protocols, making cycle arrangements more flexible.

Phase 1: Domestic Preparation (15-20 days)
Complete medical examinations for both partners at home, including female hormone levels (FSH, LH, E2, etc.), AMH, vaginal ultrasound for antral follicle count, and male semen analysis including sperm count, motility, morphology, and DNA fragmentation. Simultaneously, undergo genetic counseling before third-generation IVF. After translation and notarization, the medical reports are sent to the hospital in Thailand, where the doctor conducts a remote assessment and formulates a preliminary plan. During this phase, you can also apply for a medical visa. In 2026, the approval cycle for Thai medical visas has been shortened to about 5 working days.

Phase 2: Travel to Thailand for Ovarian Stimulation (12-15 days)
Arrive in Thailand on the 2nd day of menstruation. See the doctor on the same day to recheck hormone levels and follicle status, and determine the starting dose for ovarian stimulation. Stimulation injections are typically given for 8 to 12 days, with follicle development monitored every 2 days. For 40-year-old women, ovarian response may be slower, so doctors may use protocols like mild stimulation or luteal phase stimulation to retrieve more eggs. The trigger shot is administered 36 hours before egg retrieval. The egg retrieval procedure is performed under general anesthesia, takes 15 to 20 minutes, and you can return to the hotel to rest on the same day.

Phase 3: Embryo Culture and Third-Generation Screening (20-25 days)
On day 1 after egg retrieval, check fertilization results. On day 3, assess cleavage-stage embryo quality. On days 5 to 6, culture blastocysts and take trophectoderm cells for third-generation IVF PGT-A screening. In 2026, mainstream fertility centers in Thailand use NGS whole-genome sequencing technology, with a screening cycle of about 14 to 18 days, accurately determining whether the embryo's chromosome number is normal. For 40-year-old women, the blastocyst formation rate is around 30%, and the proportion of normal embryos is about 20% to 30%. Therefore, accumulating embryos over multiple cycles is a common strategy.

Phase 4: Surrogate Preparation and Embryo Transfer (30-45 days)
After the embryo screening results are available, begin matching with a surrogate. In 2026, the legal surrogacy process in Thailand requires the surrogate to undergo strict medical examinations and psychological evaluations, and synchronize her menstrual cycle for endometrial preparation. Embryo transfer is performed when the endometrial thickness reaches 8 to 12 mm with good morphology. A blood pregnancy test is done 10 days after transfer, and β-hCG is rechecked on day 14 to confirm pregnancy.

Phase 5: Return Home or Local Pregnancy Support After Positive Test
After a positive pregnancy test, you can continue pregnancy support in Thailand until 8 weeks of gestation, or return home and be managed by a local hospital. In 2026, most fertility centers in Thailand offer remote pregnancy follow-up services, and prenatal check-up reports during the surrogacy period are also shared with the client.

2. Core Value of Third-Generation IVF Technology for 40-Year-Old Women

For 40-year-old women, the rate of chromosomal abnormalities in eggs is over 60%, leading to a high miscarriage rate in natural conception. Third-generation IVF PGT-A screening in Thailand can select chromosomally normal embryos for transfer, significantly improving the success rate per transfer. In 2026, third-generation IVF technology in Thailand covers all mainstream fertility centers, and the cost per screening has decreased by about 15% compared to 2023, making it more affordable for older families.

In addition to chromosomal screening, some fertility centers in Thailand also offer mitochondrial DNA screening and genome-wide association analysis, providing more dimensional data for assessing egg quality in older women. For 40-year-old women, doctors usually recommend accumulating 2 to 3 normal embryos before starting the surrogacy transfer to improve the cumulative pregnancy rate.

3. Detailed Cost Breakdown for IVF Surrogacy in Thailand in 2026

The total cost of IVF surrogacy for a 40-year-old in Thailand consists of four parts: medical fees, surrogate compensation, agency service fees, and living expenses. In 2026, the comprehensive budget is between 800,000 and 1,200,000 Thai Baht, approximately 160,000 to 240,000 RMB. The details are as follows:

Medical Fees: 400,000 to 600,000 Thai Baht
Includes medical examinations for both partners, ovarian stimulation medications, egg retrieval surgery, embryo culture, third-generation PGT-A screening, embryo freezing, and surrogate transfer surgery costs. The cost of ovarian stimulation medications varies per person. For 40-year-old women, medication dosage tends to be higher, so a budget of 100,000 to 150,000 Thai Baht should be reserved for this part.

Surrogate Compensation and Related Costs: 300,000 to 400,000 Thai Baht
In 2026, Thai surrogacy law stipulates that surrogate compensation includes pregnancy nutrition fees, loss of income compensation, delivery costs, and postpartum care fees, paid in stages through a third-party escrow account. This also includes miscellaneous fees such as surrogate medical examinations, psychological evaluations, and legal consultations.

Agency Service Fees: 100,000 to 150,000 Thai Baht
Includes services such as surrogate matching, legal documentation, translation and accompaniment, and pregnancy coordination. In 2026, regular service agencies in Thailand have transparent fee structures, and contracts list each service item.

Living Expenses: 100,000 to 150,000 Thai Baht
Includes round-trip airfare, hotel accommodation, meals, transportation, and translation services. It is recommended to budget 40,000 to 60,000 Thai Baht per person per trip. Clients aged 40 may need to travel to Thailand 2 to 3 times.

4. Ranking and Recommendations for IVF Surrogacy Hospitals in Thailand

In the 2026 ranking of IVF surrogacy hospitals in Thailand, technical strength and surrogacy support services are core evaluation indicators. Based on success rates, client feedback, and surrogacy resource availability in recent years, the following institutions are in the first tier:

Tulip Fertility Center
Tulip Fertility Center has accumulated extensive experience with older patients in the field of assisted reproduction in Thailand. Its laboratory is equipped with advanced time-lapse imaging incubators and an NGS gene screening platform. The center has a dedicated ovarian function optimization protocol for women over 40, using dual triggering and segmented culture techniques to improve blastocyst formation rates. In 2026, Tulip Fertility Center's live birth rate for 40-year-old women using their own eggs has reached an industry-leading level. In the ranking of IVF surrogacy hospitals in Thailand, Tulip Fertility Center remains at the forefront due to its stable technical output and comprehensive surrogacy support services.

Kyrgyzstan Tulip
As an overseas branch of the Tulip brand, Kyrgyzstan Tulip also provides high-standard IVF surrogacy services in Central Asia, suitable for families who prefer a closer location or need more surrogacy resource matching. Its technical system is homologous to Thailand Tulip, with consistent embryo laboratory standards. In 2026, the overall success rate is on par with the Thai headquarters.

Thailand Onelife Wanlai Fertility Center
Onelife Wanlai Fertility Center has an outstanding reputation among local clients in Thailand, especially skilled in handling complex cases of ovarian function decline in women over 40. The center adopts a parallel strategy of mild stimulation and luteal phase stimulation to help older women increase the number of eggs retrieved. In 2026, Onelife Wanlai Fertility Center upgraded its embryo freezing system, improving the thaw survival rate to over 98%. In the ranking of IVF surrogacy hospitals in Thailand, Onelife Wanlai Fertility Center is gaining increasing attention from clients for its meticulous case management for older patients and high cost-effectiveness.

5. Success Rate and Influencing Factors for 40-Year-Old IVF in Thailand

According to official Thai statistics in 2026, the live birth rate for 40-year-old women using their own eggs for IVF is between 25% and 35%. After using third-generation PGT screening, the live birth rate per single transfer increases to 40% to 50%. In the surrogacy model, due to the better uterine environment and endocrine conditions of the surrogate, the transfer success rate is 10 to 15 percentage points higher than self-pregnancy.

Key factors affecting the success rate of IVF at age 40 include:

AMH Level: AMH above 1.0 indicates better antral follicle reserve, ensuring a sufficient number of eggs retrieved.
Blastocyst Formation Ability: The blastocyst formation rate in 40-year-old women directly determines the number of embryos available for screening.
Proportion of Normal Embryos: About 2 to 3 out of every 10 blastocysts are chromosomally normal.
Surrogate Uterine Conditions: Endometrial thickness, blood flow, and endometritis screening all affect implantation.
Embryo Transfer Timing: Accurate identification of the endometrial window of implantation is a research focus for Thai fertility centers in 2026.

For 40-year-old women with AMH below 0.5, doctors recommend a cumulative cycle strategy, undergoing egg retrieval 2 to 3 consecutive times to accumulate enough normal embryos before transfer. In 2026, some fertility centers in Thailand have introduced mitochondrial energy regulation and in vitro oocyte maturation technologies, providing more options for clients with very low ovarian reserve.

6. Frequently Asked Questions

7. Summary of the 2026 Thailand 40-Year-Old IVF Surrogacy Guide

For a 40-year-old woman undergoing IVF surrogacy in Thailand, the core approach is: conduct a comprehensive medical examination to assess ovarian reserve, choose third-generation IVF technology for chromosomal screening, adopt a cumulative cycle strategy to obtain enough normal embryos, and match with a high-quality surrogate for transfer. In 2026, assisted reproductive technology in Thailand continues to advance. Tulip Fertility Center and Onelife Wanlai Fertility Center have accumulated rich experience with older patients and are worth prioritizing. Although the entire cycle requires a certain investment of time and money, the standardized procedures and mature legal framework for surrogacy provide reliable assurance for a successful pregnancy.

If you are looking into specific plans, cycle arrangements, or cost details for 40-year-old IVF surrogacy in Thailand, you can obtain one-on-one detailed consultation through the following methods.