Frozen Embryo Transfer (FET) in Chennai
Optimised frozen embryo transfer protocols with vitrified embryos for improved implantation and pregnancy rates
Frozen embryo transfer (FET) involves thawing previously vitrified embryos and transferring them into a hormonally prepared uterus. Advances in vitrification — an ultra-rapid freezing technique — have made FET outcomes equal to or better than fresh transfers in many clinical scenarios. At our Chennai centre, Dr. Rukkayal personally oversees the vitrification and thawing process, ensuring embryo integrity is maintained from the moment of freezing through to transfer.
FET has become an increasingly preferred strategy in modern IVF practice. After ovarian stimulation, elevated estrogen and progesterone can sometimes reduce uterine receptivity. A freeze-all approach allows the endometrium to recover fully before transfer in a subsequent natural or medicated cycle. Dr. Rukkayal evaluates each patient individually to determine whether a fresh transfer or FET offers the best chance of implantation. For patients with surplus embryos from a previous cycle, FET provides additional attempts at pregnancy without repeating the stimulation and retrieval process — a significant physical and emotional advantage. Every frozen embryo in our programme is graded before vitrification and re-assessed after thawing, with Dr. Rukkayal confirming viability and quality before proceeding with transfer.
95%+
Post-Thaw Embryo Survival
55-65%
FET Clinical Pregnancy Rate
1000+
FET Cycles Performed
When Is FET Recommended?
You should see a specialist if you experience:
- You have cryopreserved embryos from a previous IVF cycle
- Your doctor recommended a freeze-all approach due to OHSS risk
- You are planning a second child using stored embryos
- Your endometrial lining was not optimal during the fresh cycle
- You need preimplantation genetic testing results before transfer
Vitrification: Why Modern Freezing Preserves Embryo Quality
Vitrification is a flash-freezing technique that cools embryos so rapidly that ice crystals — which can damage cell structures — never form. Instead, the embryo transitions directly into a glass-like solid state. This preserves cellular integrity far better than older slow-freezing methods. Vitrified embryos can be stored for years without quality degradation. Upon thawing, survival rates exceed 95 percent in well-equipped laboratories. This reliability is what makes freeze-all strategies and multiple transfer attempts from a single egg collection both practical and effective.
Conditions We Treat
FET Protocols & Options
Hormone-Replacement FET Cycle
Estrogen tablets or patches build the endometrial lining, followed by progesterone to create a receptive window. Transfer is timed precisely to the duration of progesterone exposure. Offers full scheduling control.
Natural Cycle FET
Embryo transfer is timed to your natural ovulation using ultrasound and LH monitoring. No additional hormones are needed. Best for patients with regular, predictable cycles.
Modified Natural Cycle FET
Your natural cycle is tracked, but a trigger injection ensures precise ovulation timing. Minimal medication with the predictability benefit of a medicated approach.
Freeze-All Strategy (Elective FET)
All embryos from a stimulation cycle are vitrified rather than transferred fresh. This approach is chosen when progesterone rises prematurely, when OHSS risk is elevated, or when endometrial conditions are suboptimal.
Why Choose Dr. Rukkayal?
- Under Dr. Rukkayal's direct supervision, the vitrification and thawing process is carefully managed, with embryo integrity confirmed before every transfer.
- Post-thaw embryo survival rates exceeding 95 percent through meticulous vitrification protocols.
- Individualised FET cycle planning — natural, modified natural, or hormone-replacement — based on your cycle regularity and endometrial response.
- Endometrial thickness and pattern assessment using serial ultrasound to confirm optimal receptivity before proceeding.
- Evidence-based timing of progesterone exposure for precise implantation window alignment.
Your Treatment Journey
FET Cycle Planning
Dr. Rukkayal reviews your previous cycle data, embryo grades, and medical history to select the optimal FET protocol — natural cycle, modified natural, or hormone replacement.
Endometrial Preparation
Depending on the protocol, your uterine lining is prepared through natural hormonal changes or supplemental estrogen and progesterone. Serial ultrasounds confirm adequate thickness and a trilaminar pattern.
Embryo Thawing and Assessment
On the day of transfer, embryos are carefully thawed using a controlled warming protocol. Dr. Rukkayal personally assesses each embryo for cell survival, re-expansion, and morphological quality before proceeding.
Embryo Transfer
The highest-quality thawed embryo is transferred to the uterus under ultrasound guidance. The procedure is painless and takes only a few minutes. You rest briefly before heading home.
Luteal Support and Pregnancy Confirmation
Progesterone support continues through the luteal phase. A blood pregnancy test is performed 10 to 12 days after transfer, and early ultrasound follow-up is arranged upon positive results.
Have Questions About Your Treatment?
Speak with Dr. Rukkayal Fathima to understand your options and next steps.
Frequently Asked Questions
Related Specialties
IVF Treatment
The stimulation and retrieval process that produces the embryos used in FET cycles.
Fertility Preservation
Egg and embryo freezing for future use, utilising the same vitrification technology as FET.
ICSI Treatment
Advanced fertilisation technique that may be used to create the embryos subsequently frozen for FET.