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Frozen Embryo Transfer (FET)


Embryo cryopreservation is a routine practice within advanced reproductive technology (ART) clinics. During a frozen embryo transfer cycle, the uterus is prepared with both estrogen and progesterone hormones to make the uterus receptive. This hormonal preparation typically takes 3-4 weeks of time. During this 3–4-week time period, hormone levels and the uterine lining are monitored to ensure optimal uterine receptivity. Cryopreserved embryos are then thawed and transferred back into the uterus. Approximately 95% of day 5-6 blastocysts typically survive the freeze-thaw process. Pregnancy testing typically occurs 10-14 days after the embryo transfer. If high quality, chromosomally normal embryo(s) are transferred, approximately 65% clinical pregnancy rate is achieved per frozen embryo transfer. Embryo cryopreservation techniques and capabilities have become an increasingly important therapeutic strategy in assisted reproduction.  

Listen To Dr. Slater’s
Most Recent Podcast!

In the latest episode of the SART Fertility Experts podcast, Dr. Slater and Betsy Campbell from RESOLVE discuss current barriers to reproductive medicine and how advocacy efforts are expanding access to care.