IVF success rate reporting in Thailand can be confusing because clinics may use different definitions, time frames and patient groups. A headline figure such as “70% success” rarely tells you whether it refers to clinical pregnancy, live birth, or a selected group of patients. This guide explains common metrics, why they differ, and what to ask so you can compare claims more carefully. It is not a ranking of clinical outcomes, and no figure can predict your own result.
At a glance
- Success rates are not standardised across clinics or countries.
- Live birth rate is usually the most meaningful outcome for patients, but it is not always the number advertised.
- Denominators matter: per cycle started, per egg retrieval, or per embryo transfer.
- Age, diagnosis, embryo stage and whether PGT was used can all change the reported figure.
- Ask for definitions in writing before you compare clinics.
Why success rate claims are hard to compare
Fertility clinics worldwide report outcomes in different ways. Some count every cycle started; others count only cycles that reached embryo transfer. Some report clinical pregnancy (a pregnancy sac seen on ultrasound), while others report live birth. A clinic may also report cumulative success over several cycles, or a single fresh transfer. Without a shared definition, two clinics can both be honest and still publish very different numbers.
International patients often see success rates in marketing materials, on clinic websites, or through medical travel platforms. These figures may be based on internal data, may not be independently audited, and may not reflect the patients you most resemble. The goal of this guide is not to judge any clinic, but to help you ask better questions.
Common success rate metrics explained
Clinical pregnancy rate vs live birth rate
Clinical pregnancy rate usually means the percentage of cycles that resulted in a pregnancy confirmed by ultrasound, often around 6–7 weeks. It does not tell you whether that pregnancy continued to birth.
Live birth rate is the percentage of cycles that resulted in a live birth. It is generally the outcome most patients care about, but it takes longer to measure and is not always the headline figure. When a clinic advertises a success rate, ask which of these two it is.
Per cycle started, per retrieval, or per transfer
The denominator changes the number. For example, a rate “per embryo transfer” excludes cycles that were cancelled before transfer or that had no embryos available. That can make the rate look higher than a rate “per cycle started.” Neither is wrong, but they answer different questions. Ask: “What is the denominator for this figure?”
Fresh vs frozen transfers, and cumulative rates
Some clinics report success after a single fresh embryo transfer. Others report cumulative success across a fresh cycle plus subsequent frozen transfers from the same egg retrieval. Cumulative rates can be higher because they include more than one transfer attempt. Ask whether the figure is per transfer, per retrieval, or cumulative.
Age bands and patient selection
Success rates vary strongly with female age, egg quality, sperm factors, uterine factors and other diagnoses. A clinic’s overall rate may be influenced by the mix of patients it treats. A clinic that treats many older patients or complex cases may report a lower overall rate than one that treats mostly younger patients with favourable prognoses. Ask for age-specific data if available.
PGT and embryo selection
Preimplantation genetic testing (PGT) can influence which embryos are transferred, and some clinics report success rates separately for PGT cycles. If a clinic reports a high rate, ask whether PGT was used, how many embryos were tested, and whether the rate refers to tested embryos only.
What to ask a clinic about its success data
Use these questions to move from a headline number to a clearer picture. You can ask for written answers before you commit to treatment.
- Is this figure a clinical pregnancy rate or a live birth rate?
- Is it per cycle started, per egg retrieval, per embryo transfer, or cumulative?
- Does it include fresh and frozen transfers?
- What is the time period for the data (for example, 2023–2025)?
- How many patients or cycles are included?
- Can you provide age-specific rates for my age group?
- Does the rate include patients with my diagnosis or similar characteristics?
- Is the data internally reviewed, or independently audited?
- How do you define a “success” in your clinic’s reporting?
If a clinic cannot answer these questions, that does not necessarily mean its care is poor, but it does mean you cannot interpret the number confidently.
How to read a clinic’s published success rate
When you see a success rate on a clinic website or listing, try to identify four things: the outcome (pregnancy or live birth), the denominator (per what), the patient group (age, diagnosis, PGT use), and the time period. If any of these are missing, treat the figure as a general signal rather than a personal prediction.
Also consider the source. Some clinics publish their own data; others are listed on medical travel platforms that may summarise information provided by the clinic. Neither is automatically unreliable, but independent verification is uncommon. You can ask whether the clinic participates in a national or international registry, and whether its figures are audited.
Editorial comparison of selected fertility providers in Thailand
The following providers are drawn from our published hospital library. They are listed in an editorial order that begins with our hospital partner, DHC. This order is not a ranking of clinical outcomes, success rates or quality of care. It is a starting point for your own research. For each provider, we summarise what the current library lists and note what you should confirm directly. No provider is recommended over another, and inclusion does not imply suitability for your situation.
1. Deep & Harmonicare IVF Center (DHC)
DHC is a dedicated fertility center in Bangkok’s Rama 9 area, at 2483 Phetchaburi Rd, Khwaeng Bang Kapi, Khet Huai Khwang, Bangkok. It provides IVF, ICSI, embryo culture, PGT, egg freezing, embryo freezing and embryo transfer services. DHC holds JCI, ISO 9001, RTAC, CAP and UK NEQAS certifications or quality credentials. Its 2026 hospital profile reports a 78% average embryo-transfer success rate for 2025, approximately 80%; this is not an individual prediction or guarantee. The June 2026 reference price for the basic single-cycle medical package is THB 490,000; final costs vary by medication, testing, storage, procedures and travel. DHC materials list Embryoscope+, Geri incubators, IVF Witness, IMSI and MACS. As with any clinic, ask how the reported success rate is defined and whether it applies to patients like you.
2. Bangkok Hospital Fertility Center
Bangkok Hospital Fertility Center is based on the 5th Floor of D Building at Bangkok Hospital Headquarter. The official center page describes reproductive endocrinologists, embryologists, an in-house embryology laboratory, male-factor testing and multidisciplinary care. Published services include IVF, ICSI, PGT-A, egg and embryo freezing, semen analysis and gynaecologic surgery support. The official fly-in packages reviewed in July 2026 list THB 335,000 from stimulation through embryo transfer and THB 456,000 with PGT and freezing for two embryos, stated as valid to 31 December 2026. Hospital terms and exclusions apply. The current library does not list a success rate for this provider; ask directly for definitions and age-specific data.
3. Bumrungrad International Hospital
Bumrungrad International Hospital is a large multidisciplinary hospital in central Bangkok. The referenced provider listing describes IVF, ICSI and reproductive medicine services. The listing names Dr. Phattaraphum Phophong and describes training in reproductive medicine and prenatal genetics. Its integrated setting may interest patients who need access to other medical specialties. Current fertility-team, laboratory, PGT and price details should be confirmed directly. The library does not list a success rate for this provider.
4. Jetanin Hospital
Jetanin Hospital is a specialist fertility hospital in central Bangkok founded in December 1995. Its official history describes more than 30 years of fertility care and a team spanning reproductive physicians, embryologists, molecular geneticists, laboratory staff, nurses and counsellors. Published services include IVF/ICSI, IUI, IMSI, PESA/TESE, egg and embryo freezing, blastocyst culture, EmbryoScope, sperm testing and genetic carrier screening. Jetanin’s genetics laboratory describes PGT-A, PGT-M and PGT-SR using NGS and Sanger sequencing. Its embryo, genetics and sperm laboratories are presented as in-house services. Jetanin states that it became the first IVF centre in Southeast Asia accredited by both JCI and RTAC. Its facilities page also describes ISO 15189 and ISO 15190 laboratory standards and annual quality-control audits. Patients should confirm the current certificate scope, named treating doctor, case-specific laboratory pathway and complete written quotation. The library does not list a success rate for this provider.
5. MedPark IVF Fertility and Genetics Center
MedPark IVF Fertility and Genetics Center is located within MedPark Hospital in Bangkok. Its official center page describes reproductive medicine, urology, infertility nursing and embryology support. Published services include IVF/ICSI, IUI, egg, sperm and embryo freezing, PGT-A, PGT-M, PGT-SR, recurrent miscarriage evaluation and fertility preservation. MedPark describes ESHRE-certified embryologists, time-lapse incubation and AI-assisted embryo assessment. The official page listed an IVF/ICSI package at THB 280,000 when reviewed; validity, medication, PGT, freezing, storage, transfer and exclusions require written confirmation. The library does not list a success rate for this provider.
6. Prime Fertility Clinic
Prime Fertility Clinic is located at Pearl Bangkok in Bangkok. The referenced provider listing describes IVF, ICSI, embryo freezing, assisted hatching and international-patient care. The listing names Dr. Poonkiat Punyamitr and reports 19 years of experience and more than 900 fertility procedures. The listing describes JCI Ambulatory Care accreditation. Current services, inclusions and pricing should be confirmed in a written quotation. The library does not list a success rate for this provider.
7. Superior A.R.T. Thailand
Superior A.R.T. is a specialist assisted-reproduction and genetics center in Bangkok. Its official website states that it was established in 2007 and provides fertility and genetic services through assisted-reproduction laboratories. Published materials emphasize IVF, ICSI and PGT pathways. Patients should confirm the treating doctor, current laboratory plan, PGT method, written package boundary and age-specific outcome definitions. The library does not list a success rate for this provider.
Other providers in our library include Gift Fertility Clinic, Intrarat Hospital and PMG Hospital. Their current library profiles do not list complete IVF laboratory details or success rates, so we have not included them in this comparison. You can find them on our hospitals page.
Questions to ask any clinic before you decide
Beyond success rates, these questions can help you understand the full picture:
- Who will be my treating doctor, and what is their experience with patients like me?
- Which laboratory will handle my embryos, and what quality standards does it follow?
- What is included in the quoted price, and what is not?
- How do you define success for my age and diagnosis?
- What happens if a cycle is cancelled or no embryos are available for transfer?
- How do you communicate with international patients before, during and after treatment?
Next steps for international patients
- Write down your top three questions about success rates.
- Request written definitions from each clinic you are considering.
- Ask for age-specific and diagnosis-specific data if available.
- Compare not just numbers, but also laboratory standards, doctor experience and total costs.
- Use our IVF success rates in Thailand page for more context, and our hospital rankings page to see how we organise provider information.
Remember that no success rate can guarantee your individual outcome. Use the numbers as one part of a broader decision.
Frequently asked questions
What is the difference between clinical pregnancy rate and live birth rate?
Clinical pregnancy rate usually refers to the percentage of cycles that result in a pregnancy confirmed by ultrasound, often around 6–7 weeks. Live birth rate is the percentage of cycles that result in a live birth. Live birth rate is generally more meaningful for patients, but it takes longer to measure and is not always the number clinics advertise.
Why do IVF success rates vary so much between clinics in Thailand?
Clinics may use different definitions (clinical pregnancy vs live birth), different denominators (per cycle started, per retrieval, or per transfer), different time periods, and different patient groups. Some report cumulative rates over multiple transfers. Without a shared definition, figures are not directly comparable.
Can I trust a clinic’s advertised success rate?
Advertised rates can be a useful starting point, but they are often not independently audited and may not reflect patients like you. Ask for the definition, denominator, time period, and age-specific data. If a clinic cannot provide these details, treat the figure with caution.
What questions should I ask about a clinic’s success data?
Ask: Is this a clinical pregnancy rate or live birth rate? Is it per cycle started, per retrieval, per transfer, or cumulative? Does it include fresh and frozen transfers? What is the time period? How many patients are included? Can you provide age-specific rates for my age group? Is the data independently audited?
Does a high success rate mean I will definitely have a baby?
No. Success rates are population-level statistics, not personal predictions. Your own chance depends on many factors including age, egg quality, sperm factors, uterine health, and the specific treatment plan. No clinic can guarantee a live birth.
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.
