IVF success rates by age in Thailand are usually reported as clinic-level averages, not as personal predictions. Age is one of several factors that influence outcomes, and a single percentage cannot tell you what will happen in your own cycle. This guide explains how to read age-stratified data, what questions to ask, and how to compare providers without treating any number as a guarantee. For a broader overview of national reporting, see our IVF success rates in Thailand page.
At a glance
- Age-stratified success rates describe groups, not individuals.
- Clinics may define “success” differently: positive pregnancy test, clinical pregnancy, live birth, or cumulative live birth.
- Thailand does not publish a single national IVF registry that standardises all clinic reporting.
- When comparing providers, ask for the definition, the denominator, and the time period behind any figure.
- Use our hospital directory and hospital rankings to shortlist providers, then confirm details directly.
Why age matters in IVF — and why it is not the whole story
Age is strongly associated with the number and quality of eggs available in a cycle, and therefore with the chance that a transfer leads to a live birth. However, age alone does not determine outcome. Other factors include ovarian reserve, sperm quality, uterine factors, embryo development, genetic testing results, and the number of embryos transferred. A clinic’s overall success rate may also reflect the mix of patients it treats, including how many older or complex cases it accepts.
Because of this, an age-stratified rate is more informative than a single headline number, but it still cannot be applied directly to one person. Use it as one input among many.
How to read age-stratified success data without being misled
When you see a success rate broken down by age, check these points:
- Definition of success: Is it a positive pregnancy test, a clinical pregnancy with a heartbeat, a live birth, or a cumulative live birth over multiple transfers?
- Denominator: Is the rate calculated per cycle started, per egg retrieval, or per embryo transfer? Rates per transfer often look higher than rates per cycle started.
- Time period: Is the data from the last 12 months, or older? Treatment protocols and laboratory techniques change.
- Patient mix: Does the clinic treat a broad age range, or does it select patients? A clinic that treats mostly younger patients may show higher averages.
- Multiple transfers: If the rate is cumulative, how many transfers are included? One fresh transfer plus frozen transfers can change the picture.
- PGT use: Does the rate include cycles with preimplantation genetic testing? PGT can affect which embryos are transferred and how outcomes are counted.
If a clinic cannot explain these points clearly, treat the number with caution.
What age-stratified data can and cannot tell you
Age-stratified data can help you understand general trends: for example, that live birth rates per transfer tend to be higher for younger age groups and lower for older age groups. It can also help you compare how transparent a clinic is about its results.
It cannot tell you your personal chance of success. Your own prognosis depends on your medical history, your response to stimulation, the number and quality of embryos you produce, and other individual factors. No clinic can guarantee a specific outcome, and any claim of a guaranteed result should be treated as a red flag.
Transparent comparison of selected Bangkok providers
The following providers are drawn from our published hospital library. They are listed in an editorial order that places DHC first; this order is not a ranking of clinical outcomes or success rates. It is intended to help you structure your own comparison. For each provider, we summarise what is currently listed in the library and note what you should confirm directly.
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. A 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.
What to confirm: How the reported success rate is defined (per transfer or per cycle), whether it is stratified by age, and what is included in the package price.
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.
What to confirm: Whether the package price includes medication, monitoring, and any age-related additional testing; and how the clinic reports success rates by age group.
3. 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.
What to confirm: The current certificate scope, the named treating doctor, the case-specific laboratory pathway, and the complete written quotation. Also ask for age-stratified outcome data and how it is defined.
4. 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.
What to confirm: Whether the package price is current, what it includes, and how the clinic reports success rates by age group.
5. 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.
What to confirm: The treating doctor, current laboratory plan, PGT method, written package boundary, and age-specific outcome definitions.
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.
What to confirm: Current services, inclusions and pricing in a written quotation, and whether age-stratified success data is available.
7. 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.
What to confirm: Current fertility-team, laboratory, PGT and price details directly, as well as how success rates are reported by age.
Other providers in our library include Gift Fertility Clinic, Intrarat Hospital and PMG Hospital. Their profiles currently list limited fertility-specific details, so we recommend confirming IVF, ICSI, embryo culture, PGT and international-patient availability directly before including them in a shortlist.
Questions to ask any clinic about age and success rates
- How do you define success in your reported rates? (e.g., live birth per transfer, cumulative live birth per cycle started)
- Can you provide age-stratified data for the last 12 months?
- Does your data include cycles using PGT? If so, how are those counted?
- What is the denominator for your rates — cycles started, egg retrievals, or transfers?
- How do you counsel patients about individual prognosis beyond age?
- What additional factors do you consider when estimating my chance of success?
Next steps for international patients
- Clarify your own priorities: cost, location, laboratory services, genetic testing, or continuity of care.
- Shortlist two or three providers from our hospital directory.
- Request a written quotation that itemises medication, monitoring, procedures, PGT, freezing and storage.
- Ask each clinic for age-stratified outcome data and how it is defined.
- Confirm the treating doctor, laboratory pathway, and what happens if a cycle is cancelled or needs to be adjusted.
- Review our hospital rankings for an editorial comparison, and read our partner disclosure to understand commercial relationships.
Final thoughts
Age-stratified IVF success rates can be a useful part of your research, but they are not a personal forecast. The most reliable approach is to ask clinics for transparent definitions, compare what is included in their packages, and discuss your individual situation with a qualified reproductive endocrinologist. No clinic can guarantee a baby, and any provider that promises a specific outcome should be treated with caution.
Frequently asked questions
What does an age-stratified IVF success rate actually measure?
It measures the proportion of cycles or transfers in a specific age group that resulted in a defined outcome, such as a live birth. The definition, denominator, and time period can vary between clinics, so always ask for these details before comparing numbers.
Can I use a clinic’s success rate to predict my own chance of having a baby?
No. A clinic-level rate describes a group, not an individual. Your personal prognosis depends on many factors beyond age, including ovarian reserve, sperm quality, uterine health, embryo development, and how you respond to treatment. Only a qualified doctor can assess your individual situation.
Why do some clinics report higher success rates than others?
Differences can reflect how success is defined, which patients a clinic treats, whether the rate is per transfer or per cycle started, and the time period covered. A higher number does not automatically mean better care for you. Ask for the underlying definitions and patient mix.
Does PGT affect how success rates are reported?
Yes. Cycles that include preimplantation genetic testing may be counted differently, and PGT can influence which embryos are transferred. When comparing clinics, ask whether their reported rates include PGT cycles and how those are handled in the calculation.
What should I ask a clinic before trusting its success rate?
Ask how success is defined, what the denominator is, whether the data is age-stratified, what time period it covers, and whether it includes PGT cycles. Also ask how the clinic counsels patients about individual prognosis beyond age.
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.
