Frozen Embryo Transfer Success Rates

National data indicates an average live birth rate of 52.3% per frozen embryo transfer (FET) in women aged 35 to 40. However, published statistics often vary between clinics depending on how outcomes are reported. Understanding the specific factors that influence your individual odds—rather than relying solely on clinic-wide averages—provides the clearest view of your path to parenthood.

Having embryos created means you can be matched with a surrogate. Connect with us today to find a surrogate and take the next step in your surrogacy journey.

Live Birth Rate Is the Most Important IVF Success Metric

When evaluating fertility statistics, distinguishing between initial positive results and final outcomes is essential.

Chemical Pregnancy Rate: Indicates a temporary rise in hCG levels detected by early blood tests, though the pregnancy may not progress.
Clinical Pregnancy Rate: Confirms a gestational sac and fetal heartbeat via ultrasound evaluation.
Live Birth Rate (LBR): Represents the percentage of transfer cycles that result in a delivered baby.

Reputable reproductive endocrinologists prioritize the live birth rate as the true gold standard of IVF outcome metrics. While high initial pregnancy rates can sound encouraging, the live birth rate reflects the ultimate goal of taking home a healthy infant.

Frozen Embryo Transfer Success Rates by Age

An embryo's developmental potential depends heavily on the age of the egg provider at the time of retrieval, rather than the age of the patient at the time of transfer. Younger eggs carry a lower risk of chromosomal errors, yielding higher-quality embryos.

The following table outlines single embryo transfer success rates grouped by egg provider age:

Age of Egg Provider at Retrieval	Single Frozen Embryo Transfer Live Birth Rate
Under 35	54.9%
Ages 35u201340	52.6%
Over 40	50.5%

Data sourced from national clinical reporting standards curated by SART.

Cumulative Success Rates by Frozen Embryo Transfer Attempt

While a single attempt carries its own independent statistical probability, your cumulative chance of having a baby grows substantially with each sequential transfer.

According to data published in Fertility and Sterility, sequential transfers using screened embryos yield impressive cumulative live birth rates across multiple attempts:

First Frozen Embryo Transfer: Reaches a cumulative live birth rate of 64.8%. Achieving success on the first attempt is common, but an initial failure does not indicate poor future prospects.
Second Frozen Embryo Transfer: Increases the cumulative live birth rate to 83.9%. Utilizing multiple embryos from a single retrieval significantly enhances overall success. Learn more about expectations for a second embryo transfer success rate.
Third Frozen Embryo Transfer: Elevates the cumulative live birth rate to 92.6%. With genetically tested embryos, cumulative rates can reach up to 98.1% by the fifth transfer attempt. Explore further details regarding a third embryo transfer success rate.

If multiple transfers with high-grade, tested embryos fail to result in pregnancy, underlying implantation barriers or uterine factors may warrant further medical evaluation.

Day 5 Blastocyst vs. Day 3 Embryo Transfers

The developmental stage at which an embryo is frozen impacts transfer outcomes:

Day 5 Blastocyst Transfers: Most modern clinics prefer culturing embryos to Day 5 or Day 6. Reaching the blastocyst stage demonstrates cellular strength and allows embryologists to perform accurate morphologic grading and genetic testing. Clinical research highlighted by the National Institutes of Health confirms that single Day 5 blastocyst transfers generally yield higher live birth rates.
Day 3 Cleavage-Stage Transfers: Day 3 transfers may be utilized when fewer embryos are available or when specific laboratory conditions favor early uterine placement over extended culture.

Understanding how your laboratory evaluates embryo growth provides valuable insight into your cycle strategy. Discover more about physical selection criteria in this embryo grading guide.

What Factors Have the Biggest Impact on Frozen Embryo Transfer Success?

A common misconception is that frozen embryos are naturally "weaker" than fresh embryos. Advances in rapid freezing technology (vitrification) have eliminated this gap, resulting in survival post-thaw rates above 95%.

Key variables influencing your success include:

Genetic Normality: Utilizing Preimplantation Genetic Testing for Aneuploidy (PGT-A) ensures only chromosomally normal embryos are selected for transfer. Review options in this embryo genetic testing guide.
Endometrial Receptivity: Adequate lining thickness, balanced hormone levels, and precise progesterone timing create an optimal environment for implantation.
Uterine Environment: Addressing uterine fibroids, polyps, or localized inflammation helps resolve barriers to implantation.

When Is It Time to Consider Surrogacy After Failed IVF?

Transitioning to gestational surrogacy is not "giving up" on your dream of parenthood; it is adjusting your medical strategy to achieve the highest chance of success.

If genetic screening confirms healthy, viable embryos but repeated personal IVF attempts fail, uterine factor infertility may be preventing implantation. Gestational surrogacy allows you to transfer your existing frozen embryos into a carefully screened surrogate carrier. This approach addresses pregnancy-related barriers while preserving your genetic connection to your child without requiring you to restart the embryo creation process.

Compare how outcomes shift across pathways in this analysis of surrogacy embryo transfer success rates vs. IVF.

Why Intended Parents Choose American Surrogacy

Navigating repeated IVF failures requires a clear, reliable pathway forward. American Surrogacy provides structured agency support designed to eliminate unnecessary delays and safeguard your family-building investment:

Accelerated Matching: Nationwide marketing outreach connects intended parents with qualified surrogates, supporting an average match timeline of 1–6 months.
Rigorous Screening: Every surrogate completes comprehensive medical record reviews, psychological evaluations, and background checks prior to profile matching.
Budget Security: The Limited Risk Program offers unlimited qualifying rematches to protect your financial resources in the event of unexpected medical disruptions.

Ready to Take the Next Step Toward Parenthood?

Whether you are preparing for an upcoming frozen embryo transfer or evaluating gestational surrogacy options, experienced guidance makes navigating your choices simpler.

Contact American Surrogacy today to speak with a specialist, review your IVF history, and build a personalized plan for growing your family.