IVF Donor Specialist Tina Koopersmith
Discusses The Embryo Selection Process
Embryo selection is the process of choosing which of the viable embryos made via IVF will be transferred to a woman’s uterus. The morning after a woman’s egg retrieval, she receives a phone call with her “FERT Report,” detailing how many embryos were produced in the lab.
Embryo Selection Process
It’s important to remember that only mature eggs can be fertilized, and that not every egg removed from the ovaries during egg retrieval is mature. Also, not every mature egg fertilizes, although many do. Statistically, 70-80% of mature eggs are expected to fertilize during IVF. Successfully fertilized eggs develop in an incubator in the IVF lab over 3-5 days.
On Day 5, an embryo has reached the “blastocyst” stage and is ready to be transferred to the uterus. This mimics nature, because in spontaneous pregnancies, it’s typically around Day 5 that a blastocyst leaves the fallopian tube and starts the egg hatching process that will allow it to implant in the uterus.
Before transferring an embryo to the uterus, we carefully analyze the developed blastocysts for normal appearance, appropriate cell count, and to see if they have fragmented or expanded. This is also the stage where Preimplantation agenetic diagnosis (PGD) testing and/or Preimplantation genetic screening (PGS) takes place.
Together We'll Find A Way
The number of embryos transferred during an IVF cycle is based on multiple factors, including maternal age and the appearance of the embryos and the number of prior IVF cycles you have completed. Ultimately, we work together with you to determine the right number of embryos to transfer based on your specific circumstances.
We look forward to meeting you, learning about you, and helping you to be healthy and happy. To schedule an appointment you can call the West Coast Women's Reproductive Center at (818) 616-9277 or make an appointment online.