Natural vs Medicated FET: Which Frozen Egg Transfer is Best for You?

Natural-Cycle and medicated frozen embryo transfers (FET) offer similar pregnancy rates, but medicated FET provides greater scheduling flexibility and reduces cycle cancellation risks through estrogen/progesterone protocols.

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Key Takeaways

Natural-Cycle FET vs Medicated FET: Key Differences in Control and Medication Use

Natural-Cycle FET requires fewer medications but offers limited scheduling control due to reliance on spontaneous ovulation, while medicated FET uses estrogen/progesterone to precisely time embryo transfer, minimizing cycle cancellations from unexpected ovulation.

Medicated FET Protocols: Enhancing Endometrial Readiness with Estrogen and Progesterone

Medicated FET protocols involve estrogen supplementation (oral, injection, or patch) to thicken the uterine lining, followed by progesterone three days before transfer. GnRH agonists like Lupron may also be used to prevent premature ovulation and ensure implantation readiness.

Cost Considerations: Natural-Cycle FET May Require More Cycles and Higher Long-Term Expenses

While Natural-Cycle FET avoids daily injections and costs less initially, it may require 3-4 cycles to achieve pregnancy due to suboptimal estrogen/endometrial development, potentially exceeding the total cost of medicated FET cycles.

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