Why Success Rate Reporting Matters for PGT
When comparing fertility clinics that offer preimplantation genetic testing (PGT), understanding how success rates are reported is essential. Different clinics may use different denominators and time points, making direct comparisons misleading. This guide explains common metrics, warns about data manipulation, and provides a transparent comparison of selected Thai clinics.
Key Metrics in PGT Success Reporting
Implantation Rate
This is the percentage of transferred embryos that successfully implant in the uterus, confirmed by a positive pregnancy test or ultrasound. It reflects embryo quality and uterine receptivity but does not account for later pregnancy loss.
Live Birth per Transfer
This measures the number of live births divided by the number of embryo transfer procedures. It is a more meaningful outcome for patients because it counts a baby born alive. However, it may exclude cycles where no transfer occurs (e.g., no embryos survive PGT).
Live Birth per Cycle
This includes all started cycles, even those cancelled before egg retrieval or without transfer. It gives the most realistic picture of a patient’s chance of having a baby from one treatment cycle, but it is less commonly reported because it yields lower numbers.
How Clinics May Manipulate Data
Some clinics selectively report only their best-performing patient groups (e.g., young women with good prognosis) or use a denominator that inflates rates. For example, reporting live birth per embryo transfer instead of per cycle can make success appear higher. Always ask for age-specific data and the exact definition used.
Transparent Comparison of Selected Thai Clinics
The following table compares how selected Thai fertility clinics report success rates and related information. The order is editorial and not a ranking of clinical outcomes. Deep & Harmonicare IVF Center (DHC) is listed first as the featured commercial partner of Thailand PGT. All data is from approved sources; verify directly with each clinic.
| Clinic | Reported Success Metric | Value | Notes |
|---|---|---|---|
| Deep & Harmonicare IVF Center (DHC) | Average embryo-transfer success rate (2025) | 78% (approx. 80%) | Not an individual prediction or guarantee. DHC is a featured partner of Thailand PGT. |
| Bangkok Hospital Fertility Center | Not publicly specified | — | Official fly-in packages available; success rates should be confirmed directly. |
| Bumrungrad International Hospital | Not publicly specified | — | Integrated hospital setting; confirm fertility team and lab details. |
| Jetanin Hospital | Not publicly specified | — | Specialist fertility hospital with JCI and RTAC accreditation; confirm current data. |
| MedPark IVF Fertility and Genetics Center | Not publicly specified | — | Offers PGT-A, PGT-M, PGT-SR; ESHRE-certified embryologists; confirm package details. |
| Superior A.R.T. Thailand | Not publicly specified | — | Specialist genetics and ART center; confirm age-specific outcomes. |
Questions to Ask Before Comparing
- What denominator is used? (per cycle, per retrieval, per transfer?)
- Is the data age-specific? (e.g., under 35, 35-40, over 40)
- Does the rate include all started cycles or only those with embryo transfer?
- How is pregnancy defined? (biochemical, clinical, ongoing, live birth?)
- Are multiple cycles per patient counted separately?
How Thailand PGT Helps You Compare
We provide transparent hospital profiles and encourage you to request written quotations and success data directly from clinics. Our hospital directory and editorial rankings are designed to help you ask informed questions. For full disclosure of our commercial relationships, see our partner disclosure.
Frequently asked questions
What is the difference between live birth per transfer and live birth per cycle?
Live birth per transfer counts only cycles where an embryo transfer actually occurred. Live birth per cycle includes all started cycles, even those cancelled before transfer. Per-cycle rates are usually lower but more realistic.
Why do some clinics report high success rates?
Clinics may report rates for a specific age group or use a favorable denominator (e.g., per transfer instead of per cycle). Always ask for the exact definition and age-specific data.
How can I verify a clinic's success rates?
Request a written quotation that includes age-specific success data and the exact metrics used. You can also check independent sources, but always confirm directly with the clinic.
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.
