1. Case Background: 41 years old and low AMH levels – what does this mean?

At 41 years old, with low AMH levels, ovarian reserve is limited. This means there is a limited number of eggs available, and the quality of eggs may decline with age. In the field of in vitro fertilization, this is considered a "high-stakes situation": it's necessary to obtain as many mature eggs as possible from a limited number of follicles, while also ensuring the quality of fertilization and blastocyst development. Additionally, PGT-A screening is required to eliminate embryos with chromosomal abnormalities.

Given these conditions, focusing solely on the number of eggs extracted isn't a wise strategy. What truly matters are the rates of mature eggs, fertilization success, and blastocyst quality – in other words, the "efficiency of each step". After the client consulted Lelaiva International for assistance, professional advisors evaluated her age, hormone levels, and ovarian reserve conditions. They matched her with reproductive hospitals authorized by multiple countries. Eventually, she was matched with a reproductive hospital in Thailand. This wasn't a random choice, but rather a decision based on determining which conditions are suitable for which treatment plans.

2. Ovulation Stimulation Strategy: PPOS Protocol – "Slow and careful approach"

In this case, the PPOS protocol was used. The core concept here is "slow stimulation", rather than aggressively pursuing a high number of follicles.

The ingenuity of the PPOS protocol lies in three key aspects: GnRH agonists slowly stimulate the ovaries, giving follicles sufficient time to mature; dydrogesterone inhibits LH peaks, preventing premature ovulation before egg retrieval; an antagonist is added in the middle to late stages to further precisely control hormone levels. The core principle is "less but better than more" – allowing limited follicles to develop fully, rather than simply focusing on increasing the number of eggs collected.

III. 9-day Cross-border Cycle: Time Line from Shanghai to Bangkok

From the start of ovulation induction until egg retrieval, the entire cycle lasts only 9 days, with seamless cross-border procedures.

It's worth noting that domestic ultrasound monitoring and hormone data are transmitted to Thai hospitals in advance. Doctors conduct remote evaluations before determining the appropriate time to travel to Thailand. After arriving in Thailand, further follow-up visits are conducted to confirm everything. Then, egg preservation injections, the last injection to trigger maturation, and egg retrieval are carried out in sequence-each step is strictly followed according to medical protocols, with no days wasted.

IV. Interpretation of key data: "Conversion rates" for each step

Why is "mature egg rate" more important than "number of eggs retrieved"?

8 eggs retrieved sounds like a large number; however, only 6 of them are mature MII-stage eggs-only MII-stage eggs have the ability to be fertilized. If only 4 out of 8 eggs are mature, then any subsequent fertilization or blastocyst culture efforts will be ineffective.

For patients with advanced age and low ovarian reserve, every less mature egg means one fewer viable embryo available for further development. The mature egg rate is the starting point of the entire transformation process, and it's the key indicator that determines success or failure.

Key factors: number of eggs retrieved, mature egg rate, fertilization rate, blastocyst rate, and PGT accuracy. These are all components of this "transformational chain". Each step in this process is crucial, and if any one of them fails, everything else will also fail. In this case, all 6 eggs were mature and fertilized (100%), and among the 3 blastocysts, 1 had normal PGT results. This conversion efficiency is quite impressive, especially considering the patient's age of 41 years.

V. Interpretation of embryo quality: What does a 5BB blastocyst mean?

The final result after PGT-A screening was a 5BB blastocyst from Day5. What do these two letters and one number represent?

By Day3, all embryos are 8-celled and have good synchronization, indicating consistent developmental potential. By Day5, they have developed into expanded blastocysts. A rating of 5BB indicates an intermediate to high level of development, making them suitable for clinical transplantation.

VI. Medical Evaluation: "High-Efficiency Cycle" under Conditions of Advanced Age and Low Reserve Capacity

From a medical perspective, there are several noteworthy aspects in this cycle:

1. The choice of treatment plan is precise.The PPOS treatment plan is particularly suitable for patients with advanced age and low reserve capacity. It uses high levels of progesterone to suppress LH peaks, while allowing for slow stimulation, giving the follicles sufficient time to mature. This avoids the problem of premature ovulation that can occur with shorter treatment plans. The gradual increase in Follicle Stimulating Hormone from 150 IU to 225 IU also reflects a cautious approach.

2. The international process is efficient.The entire process from ovulation induction in Shanghai to egg retrieval in Bangkok was completed in 9 days. The coordination by Leilaiwa International helped ensure smooth communication during the preliminary examinations, travel arrangements to Thailand, and arrival at the hospital. Monitoring data was transmitted to the Thai hospital in advance, and follow-up consultations were conducted after arriving in Thailand. The timing of egg retrieval injections, night injections, and actual egg retrieval was carefully planned.

"Small but high-quality" embryo strategy proves effective. Although the number of embryos is limited, the conversion rate at each stage remains stable, resulting in the acquisition of one high-quality transferable blastocyst. For a 41-year-old patient with low AMH levels, a normal PGT blastocyst represents a valuable opportunity.

7. Leila International Fertility Services: From consultation to matching, providing comprehensive guidance throughout the process.

At the core of this case is Leila International Fertility Services' complete consultation-matching-coordination service. By consulting with Leila, professional advisors can assess and match patients with official authorized reproductive hospitals in various countries such as Thailand, Japan, Georgia, Kyrgyzstan, the United States, and Malaysia. Ultimately, patients are matched with appropriate hospitals and doctors in Thailand.

The value of Leila's guidance lies not simply in sending patients out for treatment, but in helping them make informed decisions right from the moment they receive their test results. Based on their age, hormone levels, and ovarian reserve, they can determine which hospitals and treatment options are most suitable for them. This decision-making step directly influences the entire process.

Once the match is confirmed, Leila International Fertility Services coordinates all aspects of cross-border medical treatment, including organizing preliminary examination materials, making appointment arrangements, planning travel to Thailand, and coordinating airport pick-up and accommodation. All medical plans-including ovulation induction, medication adjustment, timing of egg retrieval, ICSI procedures, blastocyst culture, and PGT-A screening-are developed and implemented by doctors at Thai hospitals and embryology teams based on the patient's specific circumstances. Leila International Fertility Services does not participate in the development of medical plans.

Leila International Fertility Services has established close partnerships with officially authorized reproductive hospitals in the United States, Thailand, Malaysia, Kyrgyzstan, Georgia, and Japan. By combining patients' test results with their actual needs, we can find the most suitable hospitals and doctors for them. The right option is always the best choice.