IVF Success Rates: What You Should Know
Understanding IVF success rates can help you make informed decisions about your fertility journey. At IVF(SG), we believe success is personal and depends on your individual circumstances, not a single statistic.
Why Success Rates Can Be Misleading
Success rates are often presented differently across clinics, which may make comparisons confusing.
Some report:
- positive pregnancy tests
- clinical pregnancies
- live birth rates
- per treatment cycle
- per embryo transfer
Because of these variations, numbers alone do not reflect a patient’s unique situation or likelihood of success.
What Influences IVF Success?
1. Age
Egg quality naturally decreases with age, which is why younger women generally have higher success rates.
2. Fertility Diagnosis
Both male and female factors influence outcomes. Identifying the underlying cause helps guide appropriate treatment.
3. Health & Medical History
Conditions such as endometriosis, PCOS, thyroid disorders, lifestyle factors, and medications may affect your IVF response.
4. Embryo Quality
Embryo development varies across individuals. Egg health, sperm parameters, and genetics all play a role.
5. Use of Donor Eggs
For some patients with reduced ovarian reserve or fewer eggs, donor eggs may offer a higher likelihood of success.
What an IVF Cycle Typically Involves
A standard IVF cycle includes:
Ovarian stimulation with medication
Egg retrieval under sedation
Fertilisation in the laboratory (with or without ICSI)
Embryo culture
Fresh embryo transfer (if suitable)
Freezing of remaining embryos for later use
Frozen embryo transfer (FET) in a future cycle
Your cycle is considered complete once all embryos from the initial stimulation have been used.
How IVF(SG) Guides You
Rather than relying on a single percentage, your fertility specialist will look at:
your age and ovarian reserve
hormone levels
ultrasound findings
semen analysis results
medical history
any previous fertility treatment
This individualised approach helps you understand your own situation and what to expect for your treatment plan.
Why Choosing a Clinic Based Only on Success Rates Is Not Helpful
A clinic’s reported success rate may not reflect:
your age group
your diagnosis
your egg or sperm quality
your treatment plan
the number of embryos transferred
laboratory differences
how your body responds to medication
The most meaningful measure is your personal likelihood of success, which can only be assessed after a consultation.
