How to choose between fresh and frozen embryo transfer (FET)

In Vitro Fertilization (IVF) is a multi-step process where eggs are retrieved, fertilized in the laboratory, and cultured into embryos. The final step is placing the embryo into the uterus. When planning this step, you and your doctor must make a key decision: whether to undergo a fresh embryo transfer or a frozen embryo transfer (FET).

Both methods offer excellent pregnancy success rates, but they have different protocols. Understanding the differences between fresh vs frozen embryo transfer, how they affect your body's hormone levels, and who benefits from each can help you choose the best option.

Fresh vs. Frozen Embryo Transfer

A fresh transfer occurs 3 to 5 days after retrieval in the same stimulation cycle. A frozen transfer (FET) freezes all embryos (vitrification) and schedules the transfer for a future natural or medicated cycle, giving the body time to recover.

Key Factors to Consider

• Hormonal Environment & Receptivity: Stimulation causes hormone spikes that can make the lining out of sync during a fresh transfer. FET allows natural, normal levels for optimal receptivity. Learn more in our role of estrogen guide.
• OHSS Risk: If egg yield is high, fresh transfers increase OHSS risk. A freeze-all strategy protects patient safety. Read details in our OHSS guide.
• Genetic Testing: Mandatory freezing is required if conducting PGT-A genetic screening.

Plan Your Embryo Transfer Protocol
Choosing the right transfer timing is key to achieving a healthy pregnancy. If you want to plan your upcoming IVF transfer cycle, you can schedule a priority consultation at Pravi Global IVF.

Conclusion

When comparing fresh vs frozen embryo transfer, the decision comes down to your body's hormonal state and safety. While fresh transfers offer a faster path, frozen embryo transfers (FET) provide a controlled, highly receptive uterine environment and allow genetic testing, maximizing your chances of success.

Our clinical team offers customized fresh and frozen transfer protocols. Contact Pravi Global IVF today to schedule a consultation.