For some couples, Frozen Embryo Transfer (FET) is a viable option to consider before beginning a new IVF cycle. At the 100-cell stage of development, a blastocyst culture is cryopreserved, allowing the couple to use it for future IVF attempts.
At our fertility clinic NYC, we get lots of questions about FET. Here are some common questions and answers.
What is a Frozen Embryo Transfer (FET)?
FET is a cycle where frozen embryos from a previous IVF cycle are thawed and then transferred into uterus.
When can I do an FET cycle?
After the initial freezing, frozen embryos remain viable for years. Couples will have frozen embryos available for more attempts following an unsuccessful IVF cycle or after delivering a healthy baby. It’s possible to wait several years between freezing and a FET cycle.
What are the success rates for a FET?
FET cycles are nearly the same as fresh IVF cycles. Maternal age at the time of embryo freezing is typically the biggest factor in success rates. Frozen embryos don’t age like a person so couples can expect the same potential for success no matter the time between embryo freezing and thawing. Women aged 37 years and younger experience about 50 percent delivery rate per thaw, and the rate declines as maternal age at the time of the embryo freeze increases.
What are the benefits of a FET compared to a stimulated cycle?
Not only can FET cost less, but women take less medication. Women take estrogen and progesterone to thicken the uterine lining in preparation for the embryo transfer. And since no egg retrieval is necessary, there’s no general anesthesia.
FET is also less stressful since stimulation response, egg development and embryo growth were carrying out during the fresh cycle. Additionally, patients can select the day of transfer months in advance which will determine their cycle initiation date.
At Neway’s New York Fertility Clinic, we have years of expertise with blastocyst culture and frozen embryo transfer. When you’re considering fertility treatment, remember Neway has excellent success rates among fertility clinics in New York City.