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Balaji Horizon Women's Hospital

Advanced ART · FET

Frozen Embryo Transfer (FET)

Frozen embryo transfer involves transferring previously cryopreserved embryos into a hormonally-prepared or natural cycle uterus. Modern vitrification has made FET outcomes equivalent or superior to fresh transfer in many settings.

Why FET often outperforms fresh

Endometrial receptivity matters

Fresh IVF cycles can produce supraphysiological hormone levels that may impair endometrial receptivity. FET allows transfer into a more receptive endometrium – either natural or hormonally prepared.

Cycle preparation

Natural vs medicated FET

Natural cycle FET uses the patient’s own ovulation as the trigger. Suitable for regular cyclic patients.

Medicated cycle FET uses oestrogen and progesterone to prepare the endometrium. More predictable timing, suitable for most patients.

Outcomes and safety

Pregnancy and pregnancy outcomes

FET has equivalent or better live birth rates than fresh transfer in many populations. OHSS risk is eliminated. Neonatal outcomes are favourable, with slightly higher birth weights than fresh transfers.

Common questions

Frozen embryo transfer (FET)

AspectDetail
Cycle typeNatural or medicated
TimingLed by the uterine lining
BenefitLower OHSS, more flexible
The guidelines we follow

Our IVF practice follows international reproductive-medicine standards.

Frequently asked

How long can embryos be frozen?
Vitrified embryos remain viable for many years. Live births have been reported from embryos frozen for over 20 years.
Is FET safer than fresh transfer?
For patients at OHSS risk, yes – elective freeze-all with delayed FET eliminates OHSS risk while maintaining excellent pregnancy outcomes.
Does FET work as well as fresh IVF?
Per-embryo implantation rates are equivalent or better. Cumulative live birth rates from a stimulation cycle now favour freeze-all-and-FET in many indications.
Your fertility team
Dr Priyadatt Patel, fertility and reproductive surgeon, Ahmedabad

Dr Priyadatt Patel
Lead — Fertility, Endometriosis & Reproductive Surgery

Dr Patel leads fertility care at Balaji Horizon, integrating reproductive surgery and IVF into a single plan — ethical, evidence-based and individualised, with realistic expectations and no overpromising of success.

Dr Shreya Iyengar Patel, fertility and reproductive medicine, Ahmedabad

Dr Shreya Iyengar Patel
Fertility & Reproductive Medicine
Talk to our fertility team

Individualised IVF and fertility planning with honest, evidence-based counselling — and realistic expectations from the very first consultation.

Book a consultation


Frozen embryo transfer — why it is often the better choice

In a frozen embryo transfer (FET), embryos created earlier are thawed and transferred in a later cycle. Modern vitrification has made FET so reliable that for many women it is now preferred over a fresh transfer rather than a fallback.

Why we may recommend freezing first

Transferring into a uterus that has just been through ovarian stimulation is not always ideal. A FET lets the lining recover and be prepared in a calmer cycle, and it sharply reduces the risk of ovarian hyperstimulation syndrome — an important safety advantage, especially for high responders and women with PCOS.

Natural vs medicated preparation

The lining can be prepared either by tracking your natural cycle or with hormone support. We choose based on whether your cycles are regular, convenience, and your history — there is no single right answer, and we explain the trade-offs.

What to expect

Success from a good-quality thawed blastocyst is at least comparable to fresh transfer in most situations. We give you realistic, individualised figures rather than a single headline number.

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Dr. Priyadatt Patel

Senior Gynecologist · Advanced Laparoscopic Surgeon · IVF and Endometriosis Programme Lead

MS OBGyn · Pregnancy Care · Advanced Gynaecological Ultrasound · Fertility Preservation

ESHRE / ESGE / AAGL / ASRM guideline-aligned practice. 3D Karl Storz precision technique. Fertility-preservation-first philosophy. Evidence-based decisions, honest counselling, long-term outcomes orientation.

Endometriosis
Superficial to deep infiltrating, fertility-preserving excision
IVF & Fertility
Individualised protocols, ART Level 2 lab, transparent outcomes
Advanced Laparoscopy
3D Karl Storz precision, nerve-sparing technique
Pregnancy Care
Antenatal care, high-risk pregnancy, advanced ultrasound
Balaji Horizon Women Hospital
Science City Road, Ahmedabad 380060
Mon–Sat 11:00–20:00 · +91 97234 31544
Balaji Women Clinic (AEC)
Naranpura, Ahmedabad
Mon–Sat 08:30–10:30 · +91 70460 02566
Bureau Veritas ISO 9001 UKAS accreditation 0008 — Balaji Horizon Women's Hospital

Internationally Accredited · State Registered

ISO 9001:2015 Quality Management System — UKAS Accredited Certification by Bureau Veritas

Certificate IND.25.899/QM/U · Valid until 02 September 2028 · Independently verify at certcheck.ukas.com

Permanently registered under Gujarat Clinical Establishments Act, 2021 · Reg. No. CEA/AHD/262/2025 · Single Speciality Hospital · 15 Beds

Operated by Balaji Women’s Clinic · Trading as Balaji Horizon Women’s Hospital

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