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What you need to know about: Embryo freezing and Keeping
Embryo freezing is a procedure that allows people to store embryos for later use. A person can also freeze eggs, which are not fertilized. An embryo forms after fertilization and after the cells start to divide.
A person may decide to store an embryo if they hope to become pregnant in the future, to donate to others, for medical research, or for training purposes.
Successful fertilization may lead to at least one healthy embryo. A doctor can then transfer the embryo to the womb, or uterus. If the treatment is successful, the embryo will develop.
What is an embryo, and how do people create one?
Before freezing can take place, people need to create suitable embryos. To do so in the laboratory, doctors must harvest and fertilize some eggs.
First, the person will take hormones to make sure that ovulation happens on schedule. They will then take fertility medications to increase the number of eggs that they produce.
In the hospital, a doctor will extract the eggs, using an ultrasound machine to ensure accuracy.
A person may wish to freeze their eggs. Or, they may wish to use them at once to become pregnant. In this case, the doctor may recommend in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI).
During IVF, the doctor exposes the eggs to sperm and leaves them in a laboratory for fertilization to take place. After this, the correct term for a fertilized egg is an embryo.
An embryologist will monitor the development of the embryos over the next 6 days, after which they may choose a suitable embryo for implantation.
They may do this if there is a problem with the sperm or if past attempts at IVF have not resulted in fertilization. The doctor may use one embryo and freeze the others.
How do people freeze embryos?
Also, women who become pregnant at a later age have a higher risk of complications.
Finally, treatment can be costly. However, it offers a wider range of options for people who wish or need to delay pregnancy, or who may otherwise be unable to conceive.