When you compare IVF success rates between Thai clinics, the numbers can look simple, but they are rarely comparable. A single percentage tells you little unless you know the patient profile behind it, the reporting period, and the definition of success. This guide explains how to read success-rate data fairly, what to ask a clinic before you trust a figure, and how to build a shortlist based on meaningful criteria rather than marketing claims.
At a Glance: Key Criteria for Comparing IVF Success Rates
- Check the patient age groups and diagnosis mix behind the data.
- Ask whether success means clinical pregnancy, ongoing pregnancy, or live birth.
- Confirm the reporting period and whether the data is audited.
- Compare like with like: same treatment type, same embryo stage, same transfer policy.
- Request a written quotation and a clear explanation of what is included.
Why IVF Success Rates Are Hard to Compare
IVF success rates depend on many factors that have nothing to do with clinic quality. The most important is the age of the woman providing the eggs, because egg quality declines with age. A clinic that treats mostly younger patients will naturally report higher success rates than one that treats many older patients or patients with complex diagnoses. Similarly, a clinic that transfers only one embryo at a time may have a lower pregnancy rate per transfer but a lower multiple-pregnancy rate, which is safer for mother and baby.
Another issue is the definition of success. Some clinics report the number of positive pregnancy tests, which includes early miscarriages. Others report clinical pregnancies confirmed by ultrasound, ongoing pregnancies at 12 weeks, or live births. Live birth is the most meaningful outcome for patients, but it is not always the number published.
Reporting standards also vary. Some clinics publish data from a single year, while others combine several years. Some include all patients, while others exclude certain groups. Without a standardised reporting framework, comparing percentages across clinics is like comparing apples and oranges.
What to Look for in a Clinic’s Success Rate Data
Before you accept any success-rate figure, ask for the following details:
- Patient age groups: Success rates should be broken down by age, for example under 35, 35-37, 38-40, and over 40.
- Diagnosis mix: Does the data include patients with severe male factor infertility, previous failed cycles, or genetic conditions?
- Treatment type: Are the rates for IVF with or without ICSI? Does the data include PGT (preimplantation genetic testing)?
- Embryo stage: Are transfers of cleavage-stage embryos (day 2-3) or blastocysts (day 5-6) reported separately?
- Transfer policy: Does the clinic transfer one embryo or multiple? Single embryo transfer (SET) is safer but may lower the per-transfer pregnancy rate.
- Reporting period: What time frame does the data cover? Is it the most recent year or an average of several years?
- Definition of success: Is it a positive hCG test, clinical pregnancy, ongoing pregnancy, or live birth?
- Audit or verification: Has the data been independently audited or verified by a professional body?
If a clinic cannot provide this level of detail, treat its headline success rate with caution.
How to Request Meaningful Data from Thai Clinics
When you contact a clinic, ask specific questions and request written answers. Here is a template you can adapt:
- What is your most recent annual IVF success rate, broken down by patient age group?
- What is your live birth rate per embryo transfer for patients under 35, 35-37, 38-40, and over 40?
- Do you report clinical pregnancy and ongoing pregnancy rates separately?
- What is your policy on single versus multiple embryo transfer?
- Do you include PGT in your success-rate data? If so, how does it affect the rates?
- What is your cancellation rate (cycles that do not reach embryo transfer)?
- Can you provide a written quotation that lists all medical, laboratory, medication, and storage costs?
- What accreditations or quality certifications does your laboratory hold?
Ask for the data in writing, and compare the same metrics across clinics. If one clinic reports live birth rates and another reports clinical pregnancy rates, you are not comparing the same thing.
Comparing Thai Fertility Clinics: An Editorial Overview
To help you start your research, here is an editorial comparison of several Thai fertility providers. This list is not a ranking of success rates or clinical outcomes. It is a starting point based on publicly available information. Always confirm current details directly with each clinic.
Deep & Harmonicare IVF Center (DHC)
Deep & Harmonicare IVF Center (DHC) is a dedicated fertility center in Bangkok’s Rama 9 area, at 2483 Phetchaburi Rd, Khwaeng Bang Kapi, Khet Huai Khwang. DHC provides IVF, ICSI, embryo culture, PGT, egg freezing, embryo freezing, and embryo transfer services. The center holds JCI, ISO 9001, RTAC, CAP, and UK NEQAS certifications or quality credentials. DHC’s 2026 hospital profile reports a 78% average embryo-transfer success rate for 2025, approximately 80%; this is not an individual prediction or guarantee. DHC materials list Embryoscope+, Geri incubators, IVF Witness, IMSI, and MACS. 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.
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.
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.
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.
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.
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.
Questions to Ask Before You Choose a Clinic
Beyond success rates, consider these practical questions:
- Who will be my treating doctor, and can I meet them before starting?
- What is the laboratory’s accreditation and quality-control process?
- What is the policy on embryo freezing and storage?
- What happens if a cycle is cancelled?
- What is the total estimated cost, including medications, PGT, freezing, and transfer?
- What support is available for international patients, such as translation and travel coordination?
Next Steps: Build Your Shortlist
- Shortlist 3-5 clinics based on your medical needs, budget, and location preferences.
- Request written success-rate data and quotations from each clinic.
- Compare the same metrics across clinics, using the criteria in this guide.
- Schedule a consultation to discuss your specific case and ask follow-up questions.
- Make your decision based on a combination of data, clinical advice, and your personal comfort.
Remember, success rates are one piece of the puzzle. Your individual prognosis, the clinic’s approach to your specific situation, and the quality of care you receive are equally important.
Frequently asked questions
What is the most reliable IVF success rate metric?
Live birth rate per embryo transfer is the most meaningful metric for patients, as it reflects the ultimate goal of a healthy baby. However, it is not always published. If a clinic only reports clinical pregnancy rates, ask if they can provide live birth data as well.
Why do IVF success rates vary so much between clinics?
Success rates vary because of differences in patient demographics (especially age), diagnosis mix, treatment protocols, embryo transfer policies, and reporting standards. A clinic that treats younger patients or transfers multiple embryos may report higher rates, but that does not necessarily mean better care.
How can I compare success rates if clinics report different metrics?
Ask each clinic to provide the same metric, such as live birth rate per embryo transfer for your age group. If they cannot, you can still compare clinical pregnancy rates, but be aware that they are not the same as live birth rates. Always request data broken down by age.
Should I choose a clinic based only on its success rate?
No. Success rates are important, but you should also consider the clinic's experience with your specific condition, the quality of its laboratory, the treating doctor's expertise, the cost, and your comfort level. A high success rate does not guarantee a successful outcome for you.
Are Thai IVF success rates comparable to those in other countries?
Comparisons across countries are difficult because of differences in reporting standards, patient populations, and regulations. Focus on comparing clinics within Thailand using the same criteria, and always ask for age-specific data.
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.
