Egg Freezing: Everything You Need to Know
Egg freezing (oocyte cryopreservation) lets you preserve your fertility now for use later. Here's the complete guide to the process, costs, and who benefits most.
What Is Egg Freezing?
Egg freezing, medically known as oocyte cryopreservation, is a process where eggs are retrieved from your ovaries, frozen, and stored for future use. When you're ready to start a family, the eggs are thawed, fertilized with sperm, and the resulting embryo is transferred to the uterus.
Since the introduction of vitrification (a rapid flash-freezing technique) in the early 2010s, egg freezing survival and success rates have improved dramatically. It is no longer considered "experimental" by ASRM standards.
Who Should Consider Egg Freezing?
Elective egg freezing (social freezing): Women who want to delay childbearing for personal or career reasons.
Medical egg freezing: Women facing:
- Cancer treatment (chemotherapy or radiation) that may affect fertility
- Ovarian surgery that could reduce ovarian reserve
- Genetic conditions like Turner syndrome or premature ovarian insufficiency (POI)
The Egg Freezing Process
Step 1: Initial Evaluation (1–2 weeks)
- Blood tests (AMH, FSH, estradiol) to assess ovarian reserve
- Ultrasound to count antral follicles
- Discussion of expected egg yield and realistic expectations
Step 2: Ovarian Stimulation (10–14 days)
Same as IVF stimulation: daily self-injections of gonadotropins, monitoring visits every 2–3 days.
Step 3: Egg Retrieval (1 day)
Under sedation, eggs are retrieved transvaginally using an ultrasound-guided needle. The procedure takes 20–30 minutes. Plan to rest that day; return to normal activities within 48 hours.
Step 4: Vitrification
Mature eggs are rapidly frozen in liquid nitrogen using the vitrification technique. They can be stored for 10+ years without significant quality degradation.
How Many Eggs Do You Need?
This is the most important question in egg freezing planning.
Target numbers (for reasonable success odds):
- Under 35: 10–15 mature eggs per live birth attempt
- 35–37: 15–20 mature eggs
- 38–40: 20–25+ mature eggs
Most women produce 8–15 eggs per retrieval cycle, but this varies greatly. AMH levels and AFC help predict yield. Women with lower ovarian reserve may need multiple cycles.
Not all retrieved eggs will be mature. Not all mature eggs will survive thaw. Not all fertilized eggs will develop into viable embryos.
The math matters.
Egg Freezing Success Rates
Survival rate after thaw (with vitrification): 80–90%
Live birth rate per thawed egg (varies by age at freezing):
- Under 35: 5–7% per egg
- 35–37: 3–5% per egg
- 38–40: 2–3% per egg
With 15 frozen eggs at age 32: approximately 70–80% cumulative chance of one live birth.
Cost
Per cycle: $12,000–$17,000 (monitoring, retrieval, lab, vitrification) Medications: $3,000–$6,000 Annual storage: $500–$1,000/year
Many employers now cover egg freezing — especially in tech and finance. Companies like Starbucks, Apple, Facebook, and Amazon have offered this benefit.
The Right Age to Freeze
The younger the eggs, the better the quality. Age 30–34 is often considered the "sweet spot" — old enough to have thought it through, young enough to get good results with fewer cycles.
After 37, success rates decline and you may need more eggs (and therefore more cycles) to achieve the same success probability.
Questions to Ask Your Clinic
- What is my expected egg yield based on my AMH and AFC?
- How many cycles might I need to reach my target number of eggs?
- What is your egg survival and fertilization rate after thawing?
- Where will my eggs be stored, and what happens if the clinic closes?