Slow Freezing Details
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What is Slow Freezing?
Slow freezing is the traditional method of cryopreservation, where embryos are cooled gradually to prevent ice crystal formation. This method has been used for many years in fertility treatments.
The Slow Freezing Process
This method involves a controlled-rate freezer that slowly lowers the temperature, allowing the embryos to adapt to the cooling process. The gradual cooling helps minimize the formation of ice crystals, which can damage the embryos.
Advantages and Disadvantages of Slow Freezing
While slow freezing is still effective, it has lower survival rates compared to vitrification, typically around 50% to 60%. However, it has been a reliable method for many patients and continues to be used in certain circumstances.
