What Is Egg Freezing?
Egg freezing (oocyte cryopreservation) is a medical procedure that preserves a woman's eggs for future use. The eggs are retrieved, frozen, and stored. When the woman is ready to become a mother, the eggs are thawed, fertilized, and transferred to the uterus.
Vitrification, the most modern freezing technique, cools eggs ultra-rapidly, preventing the formation of ice crystals that could damage them. This has dramatically increased thaw survival rates, exceeding 95%.
Who Is Egg Freezing For?
Women who want to postpone motherhood for professional or personal reasons. Women who will undergo medical treatments that could affect their fertility (chemotherapy, radiation). Women with a family history of premature menopause.
The ideal age to freeze eggs is before 35, when egg quality and quantity are optimal. However, the procedure can be performed up to age 40 with good results.
The Step-by-Step Process
Initial evaluation: Blood tests (AMH, FSH) and ultrasound to assess ovarian reserve. Ovarian stimulation: 8–12 days of hormonal injections to develop multiple follicles. Egg retrieval: A 15–20 minute procedure under sedation to extract the eggs.
Vitrification: Mature eggs are ultra-rapidly frozen at -196°C. Storage: Eggs are kept in liquid nitrogen tanks, where they can be preserved indefinitely without degradation.
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