At a glance
Understand what published success rates for PGT-A IVF in Thailand can and cannot tell you, and the key factors that influence outcomes.
If you are considering IVF with preimplantation genetic testing for aneuploidy (PGT-A) in Thailand, you likely want to know the success rates. Published data from Thai fertility centers and international registries show that PGT-A can improve embryo selection, but the actual success rates vary widely depending on your age, embryo quality, and clinic-specific protocols. This guide explains what the numbers mean, why they differ, and what to ask before you commit.
At a Glance: Key Points About PGT-A Success Rates
- PGT-A helps identify embryos with the correct number of chromosomes, potentially reducing miscarriage and failed transfers.
- Success rates are often reported as live birth per embryo transfer, but this can be misleading if not all embryos are tested.
- Your age is the strongest predictor of success, as it directly affects the proportion of normal embryos.
- No clinic can guarantee a pregnancy or live birth; published rates are historical averages, not personal predictions.
What Do Published Success Rates for PGT-A IVF in Thailand Show?
Several Thai fertility centers have published their own outcome data, and some have been included in international studies. While exact figures are not available in this guide, the general pattern is consistent with global data: PGT-A increases the live birth rate per transfer in women of advanced maternal age (typically over 35) and reduces the time to pregnancy by avoiding transfers of embryos that would likely fail.
However, you will notice that success rates are often reported in different ways. Some clinics report the live birth rate per egg retrieval, others per embryo transfer, and some per PGT-A tested embryo. Always ask for the denominator: “Live birth per how many?”
Factors That Influence PGT-A Success Rates
Maternal Age
Age is the most significant factor. As women age, the percentage of chromosomally normal embryos declines. For example, a woman under 35 may have about 50-60% normal embryos, while a woman over 40 may have only 20-30%. This directly impacts the chance of having at least one transferable embryo.
Embryo Quality and Development
Only embryos that reach the blastocyst stage (day 5-6) can be biopsied for PGT-A. Not all fertilized eggs will reach this stage, so the number of embryos available for testing is a key factor. Clinics with strong embryology labs may have higher blastocyst rates.
Laboratory and Genetic Testing Accuracy
The accuracy of PGT-A depends on the biopsy technique and the genetic testing platform. Some methods have higher error rates, leading to false positives or negatives. Ask about the clinic’s quality control and whether they use next-generation sequencing (NGS), which is currently the most common and reliable method.
Clinic Experience and Protocols
Success rates can vary between clinics due to differences in ovarian stimulation protocols, embryo culture conditions, and transfer timing. A clinic that performs a high volume of PGT-A cycles may have more refined procedures.
How to Interpret Success Rate Data
When you see a success rate, ask these questions:
- Is this the live birth rate per transfer, per retrieval, or per patient?
- What was the average age of the patients in the study?
- Were all patients using PGT-A, or only those with a specific indication?
- How many embryos were tested on average?
- Were frozen embryo transfers used, and if so, what was the endometrial preparation protocol?
Also, remember that success rates are historical. They do not predict your individual outcome, but they can give you a general idea of what to expect.
Questions to Ask Your Thai Clinic
- What is your live birth rate per PGT-A tested embryo transfer for my age group?
- How many PGT-A cycles do you perform per year?
- What genetic testing platform do you use, and what is your biopsy error rate?
- Do you have a minimum number of blastocysts before recommending PGT-A?
- What is your policy on mosaic embryos?
- Can you provide a breakdown of outcomes by age and embryo quality?
Next Steps: Making an Informed Decision
- Gather your medical history, including any previous IVF or genetic testing results.
- Research clinics using reputable sources, such as medical societies or patient reviews.
- Schedule consultations with at least two clinics to compare their approaches and success data.
- Ask for a personalized assessment based on your age and ovarian reserve.
- Consider the financial and emotional costs of PGT-A, including the possibility of no normal embryos.
For more general information on IVF success rates in Thailand, see our IVF success rates guide. If you have further questions, visit our FAQ page or explore our guides. To discuss your specific situation, contact us.
Frequently asked questions
What is the average success rate for PGT-A IVF in Thailand?
There is no single average success rate for PGT-A IVF in Thailand, as outcomes vary by clinic, patient age, and embryo quality. Published data from Thai centers generally align with global trends, showing higher live birth rates per transfer for women under 35 and lower rates for those over 40. Always ask a clinic for its own age-specific data.
Does PGT-A improve the chance of a live birth?
PGT-A can improve the chance of a live birth per embryo transfer by selecting embryos with the correct number of chromosomes. However, it does not guarantee a live birth, and some studies show that for younger women without specific indications, the overall cumulative live birth rate may not be significantly higher. Discuss with your doctor whether PGT-A is right for you.
What factors affect PGT-A success rates?
The main factors are maternal age, the number and quality of blastocysts available for biopsy, the accuracy of the genetic testing laboratory, and the clinic's overall IVF protocols. Age is the most important because it determines the proportion of normal embryos.
How should I compare success rates between Thai clinics?
When comparing clinics, ask for the live birth rate per PGT-A tested embryo transfer, broken down by age group. Also ask about the number of cycles performed, the genetic testing method, and the criteria for recommending PGT-A. Be cautious of rates that are not age-specific or that use different denominators.
Continue your research
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.
Need help turning research into a shortlist?
