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The IVF Fertility Blog

Is There an Age Limit For Egg Freezing

Egg freezing is growing in popularity as more women delay having children until later in life.  Years ago, many women started their families in their late teens or early twenties.  This timeframe closely aligned with a woman’s natural fertility, as the quality of a woman’s eggs decreases after age 35.  In today’s society, it is common for women to delay starting a family until their 30s or later.  This may be done for a vast number of reasons including waiting to be in the ideal relationship to start a family and wanting to establish a career. 

shutterstock_131784260Is there an age limit for freezing eggs?

Although a woman’s natural fertility begins to decrease after age 35, there is no age limit for egg freezing.  The goal is to freeze eggs as early as possible.  For some women, that may mean freezing their eggs when they are 37.  The truth is, a woman who has eggs harvested at age 37 is more likely to become pregnant using those eggs when she is 40 than she would be if she was trying to conceive naturally. 

What is the success rate for egg freezing?

The state of the art freezing method of vitrification has significantly increased the success rate for the freezing and thawing process.  Traditional freezing methods used a slow dunk method.  The temperature of the eggs was gradually decreased until the eggs reached their storage temperature.  Unfortunately, this freezing method left eggs susceptible to damage from the formation of ice crystals.  Because of this, the survival rate for the freezing and thawing process was 55 percent.

Vitrification has a different approach to egg freezing.  Before freezing, the harvested eggs are evaluated for health.  Once their quality has been verified, the water is removed from the eggs and a cryoprotectant is added.  The eggs are then flash frozen, bring the eggs down to their storage temperature in an instant.  The combination of these two steps dramatically increases the likelihood of survival as ice crystals are unable to form. The survival rate for eggs frozen and thawed with vitrification is 98 percent.

For additional information on fertility preservation through egg freezing, contact the expert staff at New Hope today. Please click the link below to enter your information and New Hope will contact you, or simply call 212-517-7676. Thank You.


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