Frozen Embryo Transfer, or FET, is a fertility treatment where embryos created earlier are frozen and used later. Instead of stimulating the ovaries again, doctors focus on preparing the uterus to receive the embryo. This makes the process simpler for many patients.
The embryos used in FET come from a previous IVF or ICSI cycle. Once embryos reach a good quality stage, they are frozen using advanced freezing techniques. These embryos can remain safely stored for years without affecting their potential.
In a FET cycle, the main goal is endometrial preparation. Hormonal medications are used to thicken the uterine lining so it can support implantation. Some cycles follow a natural ovulation pattern, while others use estrogen and progesterone for more control. Ultrasound scans track lining thickness and readiness.
Because ovarian stimulation is not needed, the physical stress on the body is much lower. Patients avoid daily injections and frequent hormone fluctuations. This often makes the cycle more comfortable and predictable.
FET can also reduce overall treatment costs. Since eggs are not retrieved again, patients save on medications and procedures. It also allows couples to plan treatment timing better, without pressure from stimulation schedules.
Many studies show that frozen transfers can offer equal or even better outcomes than fresh transfers in certain cases. A well-prepared uterus plays a major role in implantation success.
FET is commonly recommended when hormone levels were high during egg retrieval, when genetic testing is planned, or when patients want to space treatments. It offers flexibility, safety, and less strain while maintaining good success rates.
