Fresh vs Frozen Embryo Transfer: Pros, Cons & What to Choose

One of the most important decisions in your IVF cycle is whether to do a fresh embryo transfer (in the same cycle as egg retrieval) or a frozen embryo transfer (FET) — where embryos are vitrified and transferred in a subsequent, carefully prepared cycle. Both approaches have merits, and the right choice depends on your specific medical situation.

What Is a Fresh Embryo Transfer?

In a fresh transfer, the best-quality embryo is transferred into the uterus 3–5 days after egg retrieval, within the same stimulation cycle. The advantage is speed — you achieve a result sooner. However, the hormonal environment of a stimulated cycle may not always be optimal for implantation.

What Is a Frozen Embryo Transfer (FET)?

In a frozen transfer, embryos are vitrified (ultra-rapidly frozen) after development and stored. They are thawed and transferred in a subsequent natural or medicated cycle when the uterine environment is considered optimal. Advances in vitrification technology mean that frozen embryos have survival rates of over 90%, with success rates that are comparable to or often better than fresh transfers.

Advantages of Fresh Embryo Transfer

• Faster — achieves a result within the same cycle
• No storage costs
• Suitable for patients with a good uterine environment post-retrieval
• Fewer total cycle visits

Disadvantages of Fresh Embryo Transfer

• High hormone levels from stimulation may impair endometrial receptivity
• Increased risk of OHSS (Ovarian Hyperstimulation Syndrome) if transfer proceeds during a high-response cycle
• Embryos have less time to be assessed for quality

Advantages of Frozen Embryo Transfer

• Allows the uterus to recover to a natural hormonal state
• Permits PGT genetic testing of embryos before transfer
• Embryos can be stored for future attempts — maximizing the value of one egg retrieval
• Shown in multiple studies to have equivalent or superior pregnancy rates vs fresh transfer in many patient groups
• Significantly reduces OHSS risk — especially in high-responder patients

When Is a Frozen Transfer Recommended?

• Risk of OHSS (high egg yield, elevated oestrogen levels)
• Thin or poorly developed endometrium at the time of retrieval
• When PGT genetic testing is planned
• Polyps or fibroids detected before transfer
• PCOS patients (typically high-responders)
• Elective freeze-all strategy for optimal uterine preparation

Vitrification at IVF CAFE Clinic

Our embryology team, led by Dr. Ved Prakash, has used closed-system vitrification since 2016 — achieving embryo survival rates of over 95% and oocyte survival rates of over 90% after freezing. We have successfully achieved livebirths from embryos cryopreserved for up to 9 years — a testament to the quality of our freezing and storage protocols.

Our Recommendation

There is no universal answer — the right approach depends on your ovarian response, endometrial thickness, oestrogen levels, and overall health status at the time of retrieval. At IVF CAFE Clinic, we make this decision together with you, based on your real-time clinical data, to give you the best possible chance of a successful pregnancy.