This technique, which became a “routine practice” about a decade ago, gives a better outcome as compared to the older method of slow freezing, added Assoc Prof Nadarajah.
According to a 2017 study in the US discussing the past and current trends of the vitrification method, the benefits of vitrified embryos and eggs were gaining worldwide acceptance by 2010.
13. WHAT HAPPENS TO THE FROZEN EGGS IF, FOR WHATEVER REASON, I DECIDE NOT TO USE THEM?
According to Dr Liow, you can choose to either donate them to other couples anonymously or donate them for research and development purposes. You can also opt to dispose of them outright, he added, which “many couples” often opt to do.
14. IS IT POSSIBLE TO TRANSFER MY FROZEN EGGS TO ANOTHER LAB OR FACILITY IN SINGAPORE OR OVERSEAS?
Yes, the frozen eggs can be transferred to another facility with the woman’s consent, said Dr Liow. The woman would be the owner of the frozen eggs, even if she marries in the future; there is no joint ownership of frozen eggs.
“Specifically designed transport canisters are used to ensure the eggs are protected and maintained at the appropriate liquid nitrogen temperature,” he said.
Hence, it is “very safe” for sperm, eggs and embryos to be transported between clinics, around the world, on a regular basis, he added.
15. WHAT HAPPENS WHEN YOU ARE READY TO USE THE FROZEN EGGS?
Let the clinic know that you and your husband are ready to proceed with fertility treatment so you can meet with the fertility specialist to discuss the process, said Dr Liow.