Blastocyst Transfer in IVF
Higher Success Rates at Excel IVF Delhi
Why Blastocyst Transfer is a Game-Changer?
In the early years of IVF, embryos were transferred on day 2 or day 3. Today, advancements in embryology allow embryos to be cultured in the lab until day 5 or day 6, when they reach the blastocyst stage.
Blastocyst transfer is now considered the gold standard in IVF because it allows better embryo selection, higher implantation rates, and reduces the risk of multiple pregnancies. At Excel IVF in Delhi, under Dr. Rhythm Gupta, blastocyst transfer is routinely performed to maximize IVF success.
What Is a Blastocyst?
- A blastocyst is an embryo that has developed for 5–6 days after fertilization.
- It contains two cell types:
- Inner cell mass (which forms the baby).
- Trophectoderm (which forms the placenta).
- By this stage, embryos have undergone multiple cell divisions and are ready for implantation.
Why Blastocysts Are Special
- More advanced than day 2–3 embryos.
- Greater implantation potential.
- Allow embryologists to select the strongest embryos.
Blastocyst vs Day 3 Transfer – What’s the Difference?
| Feature | Day 3 Transfer | Blastocyst (Day 5–6) Transfer |
| Embryo age | 6–8 cells | 100–200 cells |
| Selection accuracy | Lower | Higher |
| Implantation potential | ~25–30% | ~50–60% |
| Multiple pregnancy risk | Higher | Lower (single transfer possible) |
| Success rates | Good | Higher |
Key Takeaway: Blastocyst transfer gives doctors more confidence in selecting embryos that are most likely to result in pregnancy.
How Blastocyst Transfer Works – Step by Step
At Excel IVF, the blastocyst transfer process is carefully planned.
1- Ovarian Stimulation & Egg Retrieval
- Hormones stimulate the ovaries.
- Eggs retrieved under anesthesia.
2- Fertilization
3- Embryo Culture
- Embryos grown in advanced lab incubators.
- Development monitored until day 5–6.
4- Embryo Selection
- Only the best-quality blastocysts are chosen.
5- Embryo Transfer
- Performed on day 5.
- Painless, ultrasound-guided procedure.
6- Pregnancy Test
- Done 12–14 days after transfer.
Frozen vs Fresh Blastocyst Transfer
Both approaches are used depending on patient needs.
Fresh Blastocyst Transfer
- Embryos transferred in the same cycle as egg retrieval.
- Recommended for women with good endometrial lining.
Frozen Blastocyst Transfer (FET)
- Blastocysts frozen for future use.
- Transfer done in a natural or hormone-prepared cycle.
- Reduces risk of ovarian hyperstimulation (OHSS).
At Excel IVF: Frozen transfers have very high success because embryos are preserved with vitrification, ensuring survival rates above 95%.
Blastocyst Transfer Success Rates
- Day 3 embryos: ~25–30% implantation rate.
- Blastocyst transfer: ~50–60% implantation rate.
- Excel IVF outcomes: Pregnancy rates up to 65–70% in selected patients.
Why Success Is Higher
- Natural selection: weaker embryos stop developing before day 5.
- Better synchronization with the uterine lining.
- Higher embryo grading accuracy.
Cost of Blastocyst Transfer in Delhi
The cost of blastocyst transfer in Delhi depends on IVF packages.
- Standard IVF package includes embryo transfer.
- Blastocyst culture may add ₹20,000–₹40,000 to costs.
- Frozen blastocyst transfers have additional freezing and storage charges.
At Excel IVF, transparent pricing ensures no hidden costs.
How Many Embryos Should Be Transferred?
- Single Blastocyst Transfer (SBT): Recommended to reduce risk of twins.
- Double Blastocyst Transfer: May be advised in older women or repeated failures.
Guideline: Always balance higher success with safety of mother and baby.
Natural Pregnancy After Blastocyst Transfer – Is It Possible?
Blastocyst transfer is part of IVF, but natural pregnancies are still possible later.
- Women who conceive through blastocyst transfer may also conceive naturally in future if fertility issues were temporary.
- The procedure itself does not harm fertility potential.
Why Choose Excel IVF for Blastocyst Transfer in Delhi?
- Experienced embryologists skilled in extended culture.
- Advanced incubators with time-lapse imaging for continuous monitoring.
- High survival rates for frozen blastocysts.
- Personalised embryo transfer plans.
- Strong track record of successful IVF pregnancies.
Take the First Step Toward Future Parenthood
Explore Your Options Here:
- Endometrial Receptivity in Delhi
- Genetic Testing in IVF
- Time Lapse Embryo Selection
- AI in Embryo Selection
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FAQs on Blastocyst Transfer
Blastocyst transfer has success rates of 50–60% compared to 25–30% with day 3 transfers. At Excel IVF, outcomes are often higher, with many patients achieving pregnancy in the first attempt. Success depends on age, embryo quality, and uterine health.
Yes. Blastocyst transfer allows embryos to develop longer, ensuring only the healthiest survive. This increases implantation rates and reduces the need to transfer multiple embryos, lowering risks of twins or triplets.
Costs range from ₹20,000–₹40,000 in addition to IVF packages. Frozen blastocyst transfers add charges for freezing and storage. Excel IVF provides clear and affordable pricing with no hidden fees.
In most cases, a single blastocyst transfer is recommended. In older women or those with multiple failed attempts, doctors may consider transferring two. The decision is always individualized to balance success and safety.
Fresh transfer is done in the same cycle, while frozen allows embryos to be stored and transferred later. Frozen transfers often have equal or better outcomes because the uterus is more receptive in natural or hormone-prepared cycles.
Implantation usually occurs within 24–48 hours of transfer. Pregnancy tests are done 12–14 days later. Women may experience mild spotting or cramping during this time, which is normal.
Yes, like any fertility treatment, it may fail due to embryo quality, uterine issues, or genetic problems. However, it offers the highest success rates in IVF today. If it fails, doctors may combine it with other advanced techniques like ERA or PGT.
