With the vitrification or fast cooling process of eggs, which is standardised worldwide, eggs mostly tend to survive the thaw. In some rare cases, eggs may not survive the thaw due to mishandling, or issues in their quality. For instance, any abnormalities in the eggs such as the shape, or any defects in the membrane around them can affect thaw rates.
Ideally, you should know the number of mature eggs you have on the day of egg retrieval itself. In the lab, the embryologist receives the eggs with cumulus cells around them, which doesn’t provide a clear view of the maturity of the cell. They remove the cells around the oocytes around 2-3 hours after egg retrieval and then get to know the number of mature ones.
Even though our Egg Freezing Calculator provides an estimate based on averages, several other factors can influence your success rates with frozen eggs:
Egg quality: Egg quality, not just quantity, plays a significant role. Age significantly impacts egg quality; as younger women tend to have healthier eggs with a higher chance of fertilisation and implantation.
Fertility clinic expertise: Choose an experienced fertility clinic with a proven track record of success in egg freezing. The clinic's expertise in egg handling, freezing techniques, and thawing procedures can significantly influence your outcome.
Lifestyle habits: Maintaining a healthy lifestyle before and after egg freezing can positively influence success rates. This includes a balanced diet, regular exercise, managing stress, and avoiding activities such as smoking.
To be honest, there's no one-size-fits-all answer to whether you should complete another round of egg freezing. It depends on several individual factors:
All of the calculations used in our egg freezing success rate calculator were taken from a linear interpolation of the data provided In the research paper by R.H.Goldman et al.