Medical Disclaimer
This article is for informational purposes only and does not substitute professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making any health-related decisions.
How many embryos should be transferred? Risks of multiple pregnancy explained
0%
Vitrification embryo survival rate
Day 5
Optimal transfer stage (blastocyst)
60-65%
Blastocyst implantation rate
Class 1000
BFI embryology lab standard
Advanced embryology for best outcomes
Blastocyst rate
40-50% of embryos
Vitrification survival
98%
PGT accuracy
99.9%
Best suited for: Patients undergoing IVF who want to maximise implantation success, those with recurrent miscarriage or failed transfers, and couples considering genetic testing.
When undergoing IVF treatment, one of the most important decisions couples face is how many embryos should be transferred. While transferring more embryos may seem like a way to increase success rates, it also raises the risk of multiple pregnancy, which can have serious health implications for both mother and babies.
Understanding the balance between success and safety is key to making the right decision.
What does embryo transfer mean in IVF?
Embryo transfer is the final step of the IVF process where one or more embryos are placed into the uterus. The goal is to achieve a healthy pregnancy with the highest chance of success and lowest risk.
Advancements in IVF technology now allow doctors to select the best-quality embryo, making it possible to achieve success even with a single embryo.
How many embryos should be transferred?
The number of embryos transferred depends on several factors:
- Woman’s age.
- Embryo quality.
- Previous IVF failures.
- Medical history.
- Genetic testing results. (PGT-A)
How Many Embryos to Transfer? By Age
General medical recommendations:
- Women under 35: Single embryo transfer (SET) is usually recommended.
- Women 35–40: One or two embryos may be considered.
- Women above 40: Two embryos may be transferred in some cases.
Today, many leading IVF centres encourage Single Embryo Transfer (SET) to reduce risks while maintaining good success rates.
Why transferring more embryos is not always better?
It’s a common misconception that more embryos mean higher success. In reality:
- Success rates do not increase proportionally.
- The risk of twins or triplets rises significantly.
- Complications become more likely.
Modern IVF focuses on quality over quantity.
What is multiple pregnancy?
Multiple pregnancy occurs when more than one fetus develops in the uterus (twins, triplets, or more). While it may sound exciting, medically it is considered a high-risk pregnancy.
Risks of multiple pregnancy for the mother
Multiple pregnancies can increase complications such as:
- High blood pressure. (preeclampsia)
- Gestational diabetes.
- Increased chance of cesarean delivery.
- Excessive bleeding during or after delivery.
These risks can affect both short-term and long-term maternal health.
Risks of multiple pregnancy for babies
Babies from multiple pregnancies face higher risks, including:
- Premature birth.
- Low birth weight.
- Developmental delays.
- NICU admission.
- Increased risk of long-term health issues.
In severe cases, complications can be life-threatening.
Benefits of single embryo transfer (SET)
Choosing SET offers several advantages:
- Lower risk of twins or triplets.
- Safer pregnancy and delivery.
- Better outcomes for both mother and baby.
- Reduced medical complications.
With advanced embryo selection techniques, SET has become the safest and most effective approach in many cases.
When is transferring more than one embryo considered?
In some situations, your fertility specialist may recommend transferring more than one embryo:
- Poor embryo quality.
- Repeated IVF failures.
- Advanced maternal age.
- Specific medical conditions.
- When you are not going for blastocyst culture
However, this decision is always made carefully, keeping patient safety as the top priority.
How does your IVF specialist decide the best approach?
At a trusted IVF centre, doctors personalize treatment by evaluating:
- Your fertility history.
- Hormonal profile.
- Uterine health.
- Embryo grading.
- Previous outcomes.
This individualized approach ensures the best chance of a healthy singleton pregnancy.
Conclusion
Choosing how many embryos to transfer is not just about increasing pregnancy chances—it’s about ensuring a safe and healthy outcome for both mother and baby.
While transferring multiple embryos may seem tempting, it significantly increases risks. Modern fertility care focuses on single embryo transfer with advanced selection techniques, offering high success rates with minimal complications. Book your consultation with Bavishi Fertility Institute today and take the next step towards safe and successful parenthood.
| Embryos Transferred | Pregnancy Chance | Multiple Risk |
|---|---|---|
| Single (eSET) | Excellent with blastocyst | Very low |
| Two | Slightly higher | Twins ~20-30% |
| Three+ | Not higher overall | High-risk multiples |
| Recommended | Single in most cases | Safest for mother & baby |
| Decided by | Age, embryo quality | Individualised |
Key Takeaways
What does embryo transfer mean in IVF?
How many embryos should be transferred?
Why transferring more embryos is not always better?
What is multiple pregnancy?
Risks of multiple pregnancy for the mother
For personalised advice tailored to your test results and diagnosis, book a consultation with our specialists at Bavishi Fertility Institute.
Have Questions About many embryos should be?
Book a free consultation with our fertility specialists at Bavishi Fertility Institute — 14 centres across India.
About the Author
Dr. Parth Bavishi
MBBS, MD (Obstetrics & Gynaecology)
Co-director & IVF Specialist
Dr. Parth Bavishi holds an MD in Obstetrics and Gynaecology and brings over 12 years of specialist experience as Co-director and IVF Specialist at Bavishi Fertility Institute — a group of fertility centres across India committed to helping couples realise their dream of parenthood.
His clinical focus is on complex and challenging cases: male-factor infertility, poor sperm quality, high sperm DNA fragmentation, and repeated IVF failure. He has received specialised infertility training at three internationally recognised institutions — Bavishi Fertility Institute, the Diamond Institute (USA), and the HART Institute (Japan) — giving him a uniquely broad perspective on the latest global advances in reproductive medicine.