When researching fertility clinics in Thailand, success rates are often a key factor in decision-making. However, numbers published on clinic websites can be difficult to interpret or verify independently. This guide explains how to assess reported success rates, what to look for in the data, and which independent sources can help you make a more informed comparison.
Understanding Success Rate Reporting
Success rates in fertility treatment are typically reported as live birth per embryo transfer, clinical pregnancy rate, or ongoing pregnancy rate. Each metric has a different meaning, and clinics may choose the most favorable one. To compare fairly, look for:
- Live birth rate per embryo transfer – the most meaningful outcome for patients.
- Age-specific data – rates vary significantly by patient age.
- Cycle type – fresh vs. frozen embryo transfer, own eggs vs. donor eggs.
- Number of embryos transferred – single embryo transfer (SET) vs. multiple.
Always ask the clinic for a standardized report that includes these details.
Independent Registries and Accreditation Bodies
Several independent organizations collect and publish fertility clinic success rates. While not all cover Thailand directly, they provide a framework for what to look for:
- Human Fertilisation and Embryology Authority (HFEA) – UK regulator that publishes clinic-level success rates. Useful for understanding reporting standards.
- Society for Assisted Reproductive Technology (SART) – US-based registry that provides annual clinic-specific data. Again, not Thai-specific but sets a benchmark for transparency.
- International Committee for Monitoring Assisted Reproductive Technology (ICMART) – publishes global reports that may include Thailand.
- Thai Medical Council or Ministry of Public Health – may have local reporting requirements; ask clinics if they submit data to a national registry.
If a clinic claims accreditation from JCI, RTAC, ISO, or CAP, you can verify these directly with the accrediting body. For example, JCI maintains a searchable database of accredited organizations.
What to Look for in Reported Data
When reviewing a clinic’s success rates, consider these factors:
- Sample size – small numbers can produce misleadingly high or low rates.
- Time period – rates should be from a recent, defined period (e.g., 2023 calendar year).
- Patient selection – clinics that treat younger, healthier patients may report higher rates.
- Definition of success – confirm whether it is live birth, ongoing pregnancy, or clinical pregnancy.
- Transparency – does the clinic provide a breakdown by age and cycle type?
Be cautious of claims like “highest success rate” without context. No single number tells the whole story.
Questions to Ask a Clinic About Their Success Rates
Before committing to treatment, ask the clinic directly:
- What is your live birth rate per embryo transfer for patients in my age group using my own eggs?
- Do you report data to any independent registry? If so, which one?
- Can you provide a written report with age-specific and cycle-type-specific outcomes?
- How many cycles did you perform in the last year? What was the average number of embryos transferred?
- Do you have any third-party accreditations that audit your laboratory and outcomes?
Document the answers and compare them across clinics.
Comparing Clinics: An Editorial Overview
The following clinics are among those commonly considered by international patients. This list is an editorial comparison, not a ranking of success rates or clinical outcomes. Always verify current data directly with each clinic.
| Clinic | Location | Key Accreditations | Reported Success Rate (if available) |
|---|---|---|---|
| Deep & Harmonicare IVF Center (DHC) | Bangkok, Rama 9 | JCI, ISO 9001, RTAC, CAP, UK NEQAS | 78% average embryo-transfer success rate for 2025 (approximately 80%) |
| Bangkok Hospital Fertility Center | Bangkok, Huai Khwang | Not specified in approved sources | Not published in approved sources |
| Bumrungrad International Hospital | Bangkok | Not specified in approved sources | Not published in approved sources |
| Jetanin Hospital | Bangkok, Pathum Wan | JCI, RTAC, ISO 15189, ISO 15190 | Not published in approved sources |
| MedPark IVF Fertility and Genetics Center | Bangkok, Khlong Toei | Not specified in approved sources | Not published in approved sources |
| Superior A.R.T. Thailand | Bangkok, Ratchathewi | Not specified in approved sources | Not published in approved sources |
Note: Success rates are not directly comparable across clinics without standardized reporting. Always request age-specific, cycle-specific data in writing.
Next Steps for Independent Verification
- Ask each clinic for a written success rate report with clear definitions.
- Check if the clinic participates in a national or international registry and request the registry name.
- Verify accreditations directly with the issuing body (e.g., JCI, RTAC).
- Compare data only when it uses the same metric, age group, and time period.
- Consult with a fertility specialist or patient advocate to interpret the numbers.
For more detailed comparisons, see our hospital profiles and hospital rankings page. Read our partner disclosure for information about commercial relationships.
Frequently asked questions
What is the most reliable success rate metric for IVF?
The most reliable metric is the live birth rate per embryo transfer, ideally broken down by patient age and cycle type (fresh or frozen). This gives you the best estimate of the chance of having a baby from a single transfer.
Can I verify a Thai clinic's success rates through an independent registry?
Thailand does not have a single public registry like the HFEA or SART. However, some clinics may submit data to international registries or have accreditations that require outcome reporting. Ask the clinic directly if they participate in any registry and request the data.
Why do success rates vary so much between clinics?
Success rates vary due to differences in patient demographics (age, diagnosis), clinic policies (single vs. multiple embryo transfer), laboratory standards, and reporting methods. Always compare like-for-like data.
What should I do if a clinic refuses to provide detailed success rate data?
Consider this a red flag. Transparent clinics should be willing to share age-specific and cycle-specific outcomes. If they refuse, it may indicate that their published rates are not representative.
Are accreditations like JCI or RTAC a guarantee of high success rates?
No. Accreditations indicate that a clinic meets certain quality and safety standards, but they do not directly measure success rates. However, accredited clinics are more likely to have robust data collection and reporting practices.
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.
