Blastocyst Culture Ahmedabad

Blastocyst Culture & Day 5 Embryo Transfer in Ahmedabad

Extended Embryo Culture | Gardner Grading | Survival of the Fittest in the Lab

After your eggs are retrieved and fertilised, they enter one of the most critical phases in IVF — the culture period. In the days that follow, your embryos will be watched closely by Wellspring's embryology team as they divide, compact, and — if they have the developmental capacity — transform into blastocysts by Day 5 or 6.

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The Embryo Development Journey - Day 0 to Day 5 & Beyond

To understand why blastocyst culture matters, you first need to understand what is actually happening to your embryos inside the incubator — and what happens naturally inside the body during those same days. These two timelines must be perfectly synchronised.

Stage	Cell Count	Natural Location	What’s Happening
Day 0	🔵 Fertilisation 1 cell (Zygote)	Fallopian tube	Egg + Sperm unite via ICSI. Single cell with two pronuclei visible.
Day 1	✅ Pronuclei Check 2PN Stage	Fallopian tube	Fertilisation confirmed. Failed fertilisation embryos excluded here.
Day 2–3	🟡 Cleavage Stage 4–8 cells	Fallopian tube	Old IVF standard. Embryo still in fallopian tube in nature. NOT ready for uterus.
Day 4	🟠 Morula Stage 16–32 cells	Entering uterus	Cells compacting. Critical transition begins. Natural position: just entering uterus.
Day 5–6	⭐ 🏆 BLASTOCYST 100–200+ cells	✅ Uterus	ICM + Trophectoderm fully formed. Natural position: inside uterus. CORRECT for transfer.

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The Synchronisation Principle — Why Day 5 Is the Biological Sweet Spot

In a natural pregnancy, the fertilised egg spends the first 4–5 days travelling slowly down the fallopian tube, dividing as it goes. It only enters the uterus on approximately Day 5, when it has reached the blastocyst stage. The endometrium (uterine lining) has its own hormonal clock — it is receptive to embryo implantation for a specific window of roughly 24–48 hours on Days 5–7 after ovulation.

When an embryo is transferred on Day 3, it arrives in the uterus 2 days before it would naturally get there — and crucially, 2 days before the endometrium is prepared to receive it. A Day 5 blastocyst arrives precisely when the window is open. This is not a minor technical difference. It is the biological equivalent of knocking on a door at the exact right moment versus two days early.

The IVF Attrition Rate — Why Fewer Embryos on Day 5 Is Not Bad News

This is the section most patients need to read before Day 5 results arrive — because without context, the numbers can feel devastating. Here is what typically happens to a cohort of embryos between egg retrieval and Day 5:

Stage	Typical Attrition	What This Means
Eggs Retrieved	100% (baseline)	e.g. 10 eggs collected
Mature Eggs (MII)	70–80% survive	e.g. 7–8 mature eggs available for ICSI
Fertilised (Day 1 — 2PN check)	70–80% of mature eggs	e.g. 5–6 fertilised normally
Cleavage Stage (Day 3)	80–90% of fertilised	e.g. 4–5 dividing normally
Blastocyst Stage (Day 5–6)	40–60% of Day-3 embryos	e.g. 2–3 blastocysts formed — these are your best embryos
Grade AA/AB/BA Blastocysts	50–70% of blastocysts	e.g. 1–2 top-quality blastocysts for transfer or freezing

Gardner Grading — How Wellspring Scores Your Blastocysts

Every blastocyst produced at Wellspring IVF is graded by our embryologists using the internationally recognised Gardner grading system. The grade determines transfer priority, freezing order, and whether the embryo is suitable for PGT-A biopsy. Understanding your embryo grades helps you have a meaningful conversation with Dr. Shah about your treatment plan. The Gardner system grades two distinct structures inside the blastocyst:

Inner Cell Mass (ICM): The cells that will form the baby — graded A (excellent), B (good), or C (fair)
Trophectoderm (TE): The cells that will form the placenta — graded A (excellent), B (good), or C (fair)
Expansion Grade: How expanded the blastocyst cavity is — graded 1 (early) to 6 (fully hatched)

Gardner Grade	What It Describes	Clinical Significance
AA	Excellent ICM + Excellent Trophectoderm	Highest implantation potential. First choice for single embryo transfer (eSET). Freeze priority Grade 1.
AB	Excellent ICM + Good Trophectoderm	Very high implantation potential. Routinely transferred or frozen as first priority.
BA	Good ICM + Excellent Trophectoderm	Very high implantation potential. Equivalent to AB in most clinical outcomes.
BB	Good ICM + Good Trophectoderm	Good implantation potential. Standard choice for transfer if AA/AB/BA not available.
BC / CB	Good/Excellent ICM + Fair Trophectoderm (or vice versa)	Moderate implantation potential. May be transferred if higher grades not available.
CC	Fair ICM + Fair Trophectoderm	Lower implantation potential. Transferred only if no better-grade embryo is available.
Expansion Grade 1–6	Blastocyst expansion stage (1=early, 6=fully hatched)	Grade 3, 4, 5 (full/expanded/hatching) are ideal. Grade 6 (hatched) is also excellent.

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After 5 years of marriage and visiting many places, when we came here, we decided on the right guidance here that we will get the ivf procedure done from here, today we have 10 days of treatment. Due to the convenience, arrangement and facility o...

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My experience with wellspring hospital is very good .their staff is very supportive. Dr. Pranay is very good and professional.100% transparency at every stage. No last minute surprises.Once again thank you so much to the all team. Highlly recomme...

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Wellspring IVF & women hospital is one of the best IVF center in India where me like other infertile Indian and foreigner couples fulfill their dreams of having a healthy baby.Dr Pranay Shah has deep knowledge and skill in his work with positive ...

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Such a nice experience at well spring. And we get A childhope from this well spring hospital. Thanks a lot all members of hospital and specially to Dr. Pranay Shah sir

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This is one of the best hospital in ivf treatment with highest possibility of success, best supportive doctor and staff, thanks and recommended all to visit once

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No words are enough to express my gratitude . Thank you for making our dream comes true. You are extraordinary doctor as well as extraordinary human being also.Again thank you so much Dr.Pranay Shah and your team. Best ever doctor I have meet in ...

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Great experience with great doctor and very supportive after care facilities. Dr. Shah was not only helpful with numerous questions that we asked for around 6 months before we started the treatment but is also helping us now. He has been very help...

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We were looking for a good fertility center we came across some good reviews of Wellspring Spring Ivf Hospital. We decided and visited the hospital and with in no time the process was completed and in first attempt only the result was positive?. ...

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It has been one of the best choices that I could have made. Since researching Wellspring on Google till now the end of complete IVF cycle it has been a wonderful experience. I could have gone to biggies referential IVF Centres but I am sure experi...

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We had been very desperate to have a child. Visited many IVF centers in India for treatment. But did not get any positive result. Visited the Best IVF Center in Ahmedabad Wellspring IVF and Women's hospital after seeing good reviews. Happy to sa...

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Wellspring IVF & Women's Hospital is best IVF Center in Ahmedabad. Best thing, we got positive result in Fist IVF Cycle. Second best thing, Doctor has told us exact amount of Cost of each IVF Cycle before start of treatment so there would be no en...

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Excellent IVF Center. Friendly nature all staff & Doctor. Excellent Treatment for the Doctor. Thanks Wellspring IVF Fullfil our Dreams.

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What to say about dr pranay sir Very good human being along with very good doctor Always showers positivity on us Solves every small small queries with open heart and big smile Approachable 24*7 I will suggest everyone to consult at least once if ...

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Blastocyst Culture & PGT-A Genetic Testing - An Inseparable Pair

Preimplantation Genetic Testing for Aneuploidies (PGT-A, formerly PGS) — the process of checking embryos for chromosomal abnormalities before transfer — is only possible at the blastocyst stage. Here is why, and what it means for your treatment:

Why PGT-A Requires Blastocyst Stage

PGT-A biopsy involves removing 5–8 cells from the Trophectoderm (outer layer) of the blastocyst. This layer is large enough at Day 5/6 to allow a safe biopsy without damaging the ICM (the cells that form the baby). At Day 3, the embryo has only 6–8 cells total — a biopsy would remove 1–2 cells and risk severely damaging the embryo.

Without blastocyst culture, PGT-A is not possible. If a patient needs genetic testing — due to recurrent IVF failure, recurrent miscarriage, advanced maternal age, or known chromosomal abnormality — extended culture to Day 5 is a clinical prerequisite, not an optional extra.

The PGT-A + Blastocyst Workflow

Day 5/6: Blastocyst forms → Trophectoderm biopsy performed by embryologist
Same day: Biopsied blastocyst immediately Vitrified (frozen)
Days 7–14: Biopsy sample sent to genetics lab for chromosomal analysis
Results received: Euploid (chromosomally normal) embryos identified
Next cycle: Euploid embryos thawed and transferred in a dedicated FET cycle
Read our full PGS / PGD / PGT-A page for complete detail on genetic testing at Wellspring.

Blastocyst Culture & Single Embryo Transfer (eSET) — Preventing Twin Pregnancies

One of the most significant practical benefits of blastocyst culture is that it enables confident Single Embryo Transfer (eSET) — transferring just one embryo without compromising the pregnancy rate. Here is why this matters:

Higher Confidence Per Embryo

A Grade AA blastocyst has a 50–60% implantation rate per transfer. This high individual probability makes transferring a single embryo medically reasonable — the risk of the transfer failing is acceptably low.

Surplus Embryos Stay Frozen

Any high-quality blastocysts not transferred are Vitrified and stored for future use — either for a second attempt if needed, or for a future sibling. Read about our Embryo Freezing service for full detail.

Prevents High-Risk Twin Pregnancies

Twin pregnancies carry significantly higher risks — premature birth, low birth weight, gestational diabetes, pre-eclampsia, and NICU admission. Transferring one high-quality blastocyst avoids these risks without meaningfully reducing the pregnancy rate.

Blastocyst Transfer Success Rates — What the Evidence Shows

Success rates for blastocyst transfer are consistently and significantly higher than Day 3 transfers across published IVF outcome data. Here is what independent research and clinical registry data report:

Outcome	Day 3 Transfer	Day 5 Blastocyst Transfer	Advantage
Implantation Rate per Embryo	25–35%	45–60%	~70% relative improvement
Clinical Pregnancy Rate per Transfer	35–45%	50–65%	Consistently higher
Live Birth Rate per Transfer (under 35)	30–42%	45–58%	Significantly higher
Multiple Pregnancy Rate (with eSET)	Higher (multiple embryos transferred)	Lower (eSET feasible)	Safer, comparable success
Miscarriage Rate	Higher (more aneuploid embryos transferred)	Lower (natural selection already occurred)	More chromosomally competent embryos

Your Strongest Embryos. Your Best Chance.

Blastocyst culture is not a gamble — it is the most evidence-based selection process available in IVF today. At Wellspring IVF, Dr. Pranay Shah and our embryology team use it not as a standard protocol applied to everyone, but as a clinical decision tailored to each patient's individual embryo cohort.

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Blastocyst Culture at Wellspring IVF — Our Lab & Technology

The quality of blastocyst culture is entirely dependent on the IVF laboratory environment. Temperature fluctuation, CO2 level instability, exposure to light, vibration — each of these variables can impair embryo development between Day 3 and Day 5. At Wellspring, our lab is engineered to eliminate all of these variables.

Lab Environment Standards

ISO Class 5 air quality (ultra-clean laminar flow cabinet)
Continuous CO2 and O2 monitoring — maintained within ±0.1% tolerance
Temperature-controlled to 37°C — monitored 24 hours
VOC-free (Volatile Organic Compound) lab environment — no chemical interference
Anti-vibration workstations for embryo handling
UV-filtered lighting to prevent photo-damage to embryos

At Day 3, an embryo has only 8 cells — removing one removes 12.5% of its mass. At Day 5, the trophectoderm has 100–200 cells; removing 5–6 causes negligible disruption and produces far more accurate genomic data. Day 3 biopsy has been largely abandoned globally.

Time-Lapse Embryo Monitoring

Wellspring uses time-lapse embryo monitoring technology — a system where continuous photographs of the embryo are taken every 5–15 minutes without removing the embryo from the incubator. This gives our embryologists a complete developmental video of each embryo from Day 0 to Day 5, enabling:

Detection of abnormal cell division patterns that predict poor implantation
Identification of the specific hour each embryo reaches each developmental milestone
Better embryo ranking beyond static morphology alone

Traditional embryo assessment requires removing embryos from the incubator for grading — causing brief temperature and gas fluctuations. Time-lapse eliminates this disruption entirely.

Frequently Asked Questions

Common questions about PGT-A, PGT-M, embryo biopsy, cost, and legal restrictions in India.

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What if none of my embryos reach blastocyst stage?
This is the most feared outcome — and it does happen in a minority of cycles. If no embryos reach blastocyst by Day 5 or 6, the cycle has unfortunately not produced a transferable embryo in that attempt. This outcome is not caused by poor lab conditions at Wellspring — it reflects the biological quality of the embryos themselves. When this happens, Dr. Pranay Shah will conduct a detailed review of the cycle to determine whether a protocol change, additional testing (e.g. sperm DNA fragmentation, ERA test for endometrial receptivity), or an altered stimulation approach may improve outcomes in the next cycle.
My clinic says I have 6 embryos on Day 3. How many will make it to Day 5?
Statistically, 40–60% of Day-3 embryos reach the blastocyst stage by Day 5 or 6. For 6 Day-3 embryos, this means 2–4 blastocysts is the typical expected range. However, there is significant individual variation — some patients get better conversion, some get worse. The quality of Day-3 embryos is the best predictor: embryos with full, regular blastomeres (cells) and minimal fragmentation convert to blastocyst at higher rates than fragmented or irregular ones.
Is blastocyst culture available for all IVF patients at Wellspring?
Extended culture to Day 5 is Wellspring’s standard protocol for all IVF cycles — with one clinical exception. If a patient has very few embryos on Day 3 (typically 1–2), Dr. Shah may recommend a Day-3 transfer to avoid the risk of losing those embryos in extended culture. The choice is always made in the patient’s best clinical interest, not as a blanket policy. This case-by-case decision is discussed with the patient before the transfer day.
What does a blastocyst grade of '4AA' mean?
This is the best possible blastocyst grade under the Gardner grading system: Expansion Stage 4 (fully expanded blastocyst cavity) + ICM Grade A (excellent — tight, prominent inner cell mass) + Trophectoderm Grade A (excellent — cohesive cells with many cells present). A 4AA blastocyst has the highest statistical chance of successful implantation. Even a 3BB blastocyst, however, is a good quality embryo with significant implantation potential.
Does blastocyst culture damage the embryo?
No — when performed in a properly calibrated IVF laboratory (as at Wellspring), extended culture does not cause harm to embryos that are biologically capable of continued development. Embryos that fail to reach blastocyst in the lab would have also failed to develop in the body — they lacked the developmental capacity from the start. The lab environment at Wellspring is engineered to replicate the natural fallopian tube conditions as closely as possible, including temperature, pH, gas mixture, and absence of light and chemical interference.
Can frozen blastocysts be used in a later cycle?
Yes — this is one of the key advantages of blastocyst culture. All high-quality blastocysts not transferred in the fresh cycle are Vitrified (flash-frozen) and stored for future use in a Frozen Embryo Transfer (FET) cycle. Published data consistently shows that frozen blastocysts achieve success rates equal to or better than fresh blastocyst transfers in many clinical scenarios — because the FET cycle allows the endometrium to be prepared in an optimal hormonal environment, separate from the stimulation cycle.
What is the cost of blastocyst culture in Ahmedabad?
Blastocyst culture is not a separate add-on cost at Wellspring IVF — it is included within the standard IVF treatment package as the default embryo culture protocol. Extended culture to Day 5 is part of the laboratory process, not an upgradeable feature. The complete IVF package cost, including embryo culture, monitoring, and transfer, is discussed transparently at your initial consultation. Call 9099946050 for current pricing.