What is Blastocyst Transfer?

Traditional IVF involves the embryo transfer to the womb on Day 3. The embryo is given a longer time to grow until it is complex with multiple cells in a Day 5 transfer, called a blastocyst. The blastocyst embryo consists of two parts: the inner cells that will develop into the baby and the outer cells that will become the placenta. Transferring at this stage is similar to natural pregnancy, as the embryo is usually implanted in the uterus approximately 5 days after fertilisation.

Why is Blastocyst Culture Important?

Blastocyst culture IVF helps fertility specialists make better choices for your care.

  • Better Selection: Not all fertilised eggs continue to grow past Day 3. Allowing embryos to culture longer helps us identify which ones are strong enough to keep developing.
  • Natural Timing: The womb is naturally more receptive to an embryo on Day 5, creating a better implantation window for attachment.
  • Higher Viability: Embryos that reach the blastocyst stage generally have higher potential for successful embryo implantation.

Step-by-Step Blastocyst Transfer Process

Step What Happens
Egg Retrieval Eggs are collected from the ovaries.
Fertilisation Eggs are fertilised using standard IVF or ICSI.
Blastocyst Culture Embryos grow in incubators for 5–6 days.
Embryo Assessment Specialists grade embryos to choose the best blastocyst.
Day 5 Transfer The blastocyst is placed in the uterus via catheter.
Pregnancy Test A blood test is done 10–14 days later to check results.

 

Blastocyst Transfer vs Day 3 Transfer

Feature Blastocyst Transfer (Day 5) Day 3 Transfer (Cleavage Stage)
Embryo Age 5 to 6 days old 3 days old
Implantation Potential Higher per embryo Moderate per embryo
Embryo Selection Easier to identify the strongest embryos Harder to predict long-term growth
Culture Duration Requires 5–6 days in specialized media Requires 3 days in the lab
Patient Suitability Best with multiple developing embryos Ideal if fewer embryos are available

Why Patients Trust Our IVF Specialists?

We have professional IVF doctor who deliver compassionate care with proven results.
25+

Years Experience

We have been helping couples build their families with safe fertility care.
90%

IVF Treatment Success Rate

Our high IVF cycle rates give you one of the best chances to become parents.
25,000+

Happy Couples

Thousands of couples have trusted us, and many are now proud parents.
30%

Lower Cost

Get world-class IVF treatments at a much more affordable IVF cost.

Why Patients Trust Our fertility Specialists and out IVF centre?

We believe our patients’ words speak louder than our own. Here are real experiences shared by couples treated at our IVF Centre , reflecting their journey with our fertility specialist and stories of trust, care, and new beginnings.
View all reviews

Blastocyst Success Rate

In women under 35, blastocyst transfer IVF achieves a success rate of 45% to 65% per cycle.

Individual results depend on key factors like maternal age, embryo quality, uterine health, and underlying fertility conditions. As noted in ASRM guidelines, transferring a Day 5 blastocyst generally offers higher live birth rates than a Day 3 transfer in suitable patients.

Your fertility doctor will monitor your embryos daily to decide the safest day for transfer.

Who May Benefit from Blastocyst Transfer?

While blastocyst transfer offers clear advantages, suitability varies from patient to patient. This approach may be recommended if you:

  • Have multiple good-quality embryos on Day 3.
  • Experienced previous IVF embryo transfer failures or recurrent implantation failure.
  • Are younger with a good ovarian reserve.
  • Want to reduce the chance of carrying twins or triplets by transferring a single embryo.
+91 9267982924

    Book Your Appointment

    Fill out the form below, and our care team will get back
to you within 24 hours.