Egg freezing has gone from experimental to routine in less than a decade. What was once offered only to cancer patients facing chemotherapy is now available to anyone who wants to preserve their fertility options. But not all freezing is equal — and the decision deserves careful thought, honest information, and personalized medical guidance.
What is egg freezing?
Oocyte cryopreservation is a technique that preserves your eggs at their current genetic quality for future use. Egg quality — particularly chromosome integrity — deteriorates over time, increasing the risk of miscarriage and chromosomal abnormalities as a woman ages. Freezing eggs is, in effect, a way to “lock in” your biological age at the moment of retrieval.
The process involves hormonal stimulation to produce multiple eggs, retrieval under light sedation, and immediate vitrification — a rapid-freezing technique that dramatically improved survival rates compared to earlier slow-freeze methods. When you’re ready to use your eggs, they are thawed, fertilized with sperm, and the resulting embryos are transferred to the uterus.
Is there an ideal age?
The optimal window for egg freezing is between 25 and 35 years of age. Women in this range typically produce more eggs per stimulation cycle, and those eggs are more likely to be chromosomally normal. Between 35 and 40, egg freezing can still be an excellent decision — though outcomes become more variable and more cycles may be needed to bank an adequate number of eggs. After 40, success rates decline significantly, and the decision requires individual medical evaluation rather than a general recommendation.
It is important to understand that calendar age alone is not the determining factor. Ovarian reserve — the number of eggs remaining in the ovaries — varies considerably between individuals of the same age. Some 38-year-olds have excellent reserves; some 30-year-olds do not. A proper assessment of your ovarian reserve is essential before making any decision.
Is egg freezing the same everywhere?
No. There are meaningful differences between clinics in both success rates and the overall patient experience — differences that matter enormously when you eventually want to use those frozen eggs. What distinguishes a high-quality program is not the marketing but the underlying science and execution.
Key factors to evaluate: the laboratory’s vitrification expertise and survival rates after thaw; the quality of the culture media and consumables used; the embryologist’s specific experience with oocyte cryopreservation; and whether you receive personalized guidance or a one-size-fits-all protocol. Be cautious of clinics that quote pricing before understanding your medical history — your ovarian reserve, your age, and your goals should all shape the conversation before any numbers are discussed.
What makes our approach different?
Four factors define the experience at CEGYR with Dr. Glujovsky:
- Advanced laboratory: Cutting-edge vitrification technology with rigorously tracked survival and fertilization rates.
- Experienced embryologists: Specialists who focus on oocyte cryopreservation with deep technical expertise in the vitrification process itself.
- Premium materials: High-quality consumables and culture media that directly influence egg survival and embryo development.
- Direct, personalized care: Dr. Glujovsky is involved throughout your entire process — not a rotation of different physicians at each visit.
Getting started
The first step is an initial consultation to assess your ovarian reserve — through an AMH blood test and antral follicle count on ultrasound — and to create a personalized plan based on your age, goals, and circumstances. These initial consultations can be done by video call before you travel to Buenos Aires, so you arrive with a clear plan already in place. The stimulation phase typically takes 10–12 days, and egg retrieval is an outpatient procedure that takes under 30 minutes.
“The best time to freeze your eggs was a few years ago. The second best time is now — but the decision should be based on your ovarian reserve, not just your calendar age.”
