Before beginning a cycle of in vitro fertilization, consider important questions, including:
- How many embryos will be transferred?
The number of embryos transferred is typically based on age and number of eggs retrieved. Since the rate of implantation is lower for older women, more embryos are usually transferred-except for women using donor eggs or genetically tested embryos.
Most doctors follow specific guidelines to prevent a higher order multiple pregnancy, such as triplets or more. In some countries, legislation limits the number of embryos that can be transferred. Make sure you and your doctor agree on the number of embryos that will be transferred before the transferred procedure.
- What will you do with any extra embryos?
Extra embryos can be frozen and stored for future use for several years. Not all embryos will survive the freezing and thawing process, although most will.
Having frozen embryos can make future cycles of in vitro fertilization less expensive and less invasive. Or, you might be able to donate unused frozen embryos to another couple or a research facility. You might also choose to discard unused embryos.