Frozen Eggs Pregnancy Rates Proven Reliable in ASRM Study

A 2015 ASRM study confirms vitrified non-donor eggs yield pregnancy rates equal to fresh eggs, with a 35-37-year-old woman having a 70% chance of one child with 18 frozen eggs. Vitrification eliminates ice crystal damage, ensuring comparable success across elective, emergency, and limited insemination cases.

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Key Takeaways

Vitrification Technology Ensures High Frozen Egg Success Rates

Fast-freeze vitrification (introduced in 2009) eliminates ice crystal damage from older slow-freeze methods, achieving pregnancy rates for frozen eggs on par with fresh eggs. This technology is critical for preserving egg quality during freezing and thawing processes.

Maternal Age and Egg Quantity Correlate with Pregnancy Chances

Women aged 35-37 with 18 frozen eggs have a 70% chance of one child, 40% chance of two children, and 15% chance of three children. Age at freezing and total egg count directly impact statistical probabilities for family-building outcomes, aiding informed treatment decisions.

Elective, Emergency, and Limited Insemination Cases Show Equivalent Pregnancy Rates

The study evaluated three patient groups: those delaying parenthood, those limiting embryo formation, and those facing unexpected sperm issues. All groups achieved pregnancy rates matching fresh egg users, proving frozen eggs are reliable for diverse fertility scenarios.

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