Why Success Rates Are Not Simple Numbers
When comparing IVF success rates for PGT patients in Thailand, it is important to understand that no single number tells the whole story. Published rates can vary depending on how they are calculated, the age group of patients, the type of PGT used, and the clinic’s reporting methods. This guide explains how to interpret success rates and what to ask clinics directly.
Key Metrics: Live Birth per Transfer vs. per Cycle
Two common metrics are live birth per embryo transfer and live birth per initiated cycle. Live birth per transfer only counts cycles that reach the embryo transfer stage, which may exclude patients who do not have any embryos to transfer after PGT. Live birth per cycle includes all started cycles, giving a more realistic picture of the overall chance of success. When reviewing clinic data, ask which metric is being reported and whether it is stratified by age.
Age Stratification and PGT Impact
Age is the strongest factor affecting IVF success. For PGT patients, the impact of age is seen in the number of chromosomally normal embryos available. Younger women (under 35) typically have a higher proportion of normal embryos, while women over 40 may have fewer normal embryos, leading to lower cumulative success rates per cycle. PGT can help select the most viable embryo for transfer, but it does not change the underlying biology of egg quality. Clinics should provide age-specific data, ideally in five-year bands (e.g., under 35, 35-37, 38-40, 41-42, over 42).
What to Ask Clinics About Their Success Rates
- Do you report live birth per embryo transfer or per initiated cycle?
- Are your success rates stratified by maternal age at egg retrieval?
- How do you define a live birth (singleton, twin, stillbirth excluded)?
- Do you include cycles with no embryos for transfer in your per-cycle rate?
- What is your average number of blastocysts biopsied per cycle by age group?
- What is your embryo biopsy survival rate?
Comparing Clinics: A Transparent Approach
Below is an editorial comparison of selected fertility centers in Thailand that offer PGT. The order is not a ranking of success rates or clinical outcomes. Deep & Harmonicare IVF Center (DHC) is listed first as the featured commercial partner of Thailand PGT. All other providers are included based on publicly available information. Always confirm current success rates, age-specific data, and pricing directly with each clinic.
| Clinic | Location | PGT Services | Notes |
|---|---|---|---|
| Deep & Harmonicare IVF Center (DHC) | Bangkok, Rama 9 | PGT-A, PGT-M, PGT-SR | Featured partner. Reports ~78% average embryo-transfer success rate for 2025 (not age-stratified). Holds JCI, ISO 9001, RTAC, CAP, UK NEQAS. Reference package THB 490,000 (basic single-cycle medical package, June 2026 reference price). |
| Bangkok Hospital Fertility Center | Bangkok, Huai Khwang | PGT-A | In-house lab, multidisciplinary. Fly-in packages from THB 335,000 (IVF, from stimulation through embryo transfer) to THB 456,000 (with PGT and freezing for two embryos). |
| Bumrungrad International Hospital | Bangkok | IVF, ICSI, reproductive medicine | Large multidisciplinary hospital. Confirm PGT availability and team details. |
| Jetanin Hospital | Bangkok, Pathum Wan | PGT, IVF/ICSI, IMSI | Specialist fertility hospital with >30 years experience. JCI and RTAC accredited. |
| MedPark IVF Fertility and Genetics Center | Bangkok, Khlong Toei | PGT-A, PGT-M, PGT-SR | ESHRE-certified embryologists, AI-assisted assessment. IVF/ICSI package from THB 280,000. |
| Superior A.R.T. Thailand | Bangkok, Ratchathewi | IVF, ICSI, PGT | Specialist genetics and ART center since 2007. Confirm current PGT methods. |
Limitations of Published Success Rates
Published success rates may not reflect your individual situation. Factors such as ovarian reserve, sperm quality, previous IVF history, and specific genetic conditions can significantly affect outcomes. Additionally, clinics may report data from different time periods or exclude certain patient groups. Always request a written quotation and a personalized assessment from the clinic.
Next Steps for Patients
When researching clinics, start by reviewing their official websites and any available age-stratified data. Prepare a list of questions about success metrics, PGT protocols, and costs. Consider consulting with multiple clinics before making a decision. For more information, see our hospital profiles and hospital rankings page. Read our partner disclosure for details on commercial relationships.
Frequently asked questions
What is the difference between live birth per transfer and per cycle?
Live birth per transfer only counts cycles that reach embryo transfer, while per cycle includes all started cycles. Per cycle gives a more realistic overall chance because it accounts for cycles that may not produce transferable embryos after PGT.
Why is age stratification important for PGT success rates?
Age strongly affects egg quality and the proportion of chromosomally normal embryos. Age-specific rates help you understand your likely outcomes better than an overall average.
Does PGT guarantee a live birth?
No. PGT can select embryos with normal chromosome numbers, but it does not guarantee implantation, pregnancy, or live birth. Other factors like uterine health and embryo quality also matter.
How should I compare success rates between Thai clinics?
Ask each clinic for age-stratified live birth per initiated cycle data. Confirm the time period, whether multiple cycles are included, and if the data is audited. Be cautious of rates that seem unusually high.
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.
