Fertility Preservation: What the Data Shows
Egg freezing and embryo freezing, how they work, what outcomes look like by age, and the practical considerations most guides skip.
Key takeaways
- Age at the time of freezing is by far the strongest predictor of success; frozen eggs keep the biological age they had when stored, so earlier is better.
- Egg freezing needs no sperm source and keeps your genetic material yours, but eggs are more fragile in the freeze-thaw than embryos, which are more robust but require sperm at creation.
- Modern vitrification (rapid freezing) has made egg freezing highly effective; ASRM dropped its "experimental" label in 2012.
- Two paths drive it: medical preservation (before cancer or other gonadotoxic therapy) and elective preservation to extend the fertility window.
Why Fertility Preservation Has Become Mainstream
Fertility preservation, primarily egg freezing (oocyte cryopreservation) and embryo freezing, has transitioned from an experimental procedure to a routine option over the past decade. The American Society for Reproductive Medicine (ASRM) removed the "experimental" label from egg freezing in 2012, and annual egg freezing cycles have grown exponentially since then.
The growth is driven by two populations: medical preservation (patients facing cancer treatment or other gonadotoxic therapies) and elective preservation (women who want to extend their fertility window for personal, career, or relationship reasons). Employer-sponsored fertility benefits, now offered by many large companies, have further accelerated elective egg freezing.
Egg Freezing vs. Embryo Freezing
Egg freezing preserves unfertilized eggs. The advantage is flexibility, you do not need a sperm source at the time of freezing, and the eggs remain your genetic material alone. The disadvantage is that eggs are more fragile than embryos and have slightly lower survival rates after thawing.
Embryo freezing creates embryos through IVF and freezes them. Embryos are more robust than eggs during the freeze-thaw process. However, embryo freezing requires sperm at the time of creation and creates shared genetic material if using a partner's sperm, which has legal and relationship implications if circumstances change.
For patients with a partner or using donor sperm, embryo freezing offers marginally better expected outcomes per frozen unit. For patients without a current sperm source, egg freezing is the only option and has become highly effective with modern vitrification techniques.
Age and Outcomes: The Critical Variable
Age at the time of freezing is by far the most important predictor of future success. Egg quality declines with age in ways that cannot be reversed or compensated for by technology. The numbers are stark:
- Under 35: Each frozen egg has approximately a 6-8% chance of resulting in a live birth (assuming good-quality vitrification). 15-20 eggs provide a reasonable chance of one future pregnancy.
- 35-37: Per-egg live birth rate drops to approximately 4-6%. More eggs needed per desired pregnancy.
- 38-40: Per-egg rates decline further to 2-4%. Multiple retrieval cycles often needed.
- Over 40: Per-egg success rates are low enough that egg freezing may not be recommended as a reliable preservation strategy by most clinics.
These numbers explain why reproductive endocrinologists emphasize freezing sooner rather than later. Each year of delay meaningfully reduces expected outcomes. See our age and IVF success guide for detailed analysis.
Evaluating Clinics for Fertility Preservation
When choosing a clinic for egg or embryo freezing, consider:
- Egg freezing volume: Clinics with more experience in cryopreservation have more refined protocols. Ask specifically about their egg freezing volume (distinct from IVF volume).
- Vitrification vs. slow freezing: Vitrification (rapid freezing) is now standard and yields significantly better egg survival rates than older slow-freeze methods. Any reputable clinic should use vitrification.
- Storage facilities and backup systems: Ask about storage tank monitoring, alarm systems, and backup protocols. Tank failures, while rare, can be catastrophic.
- Thaw survival rates: This is the most meaningful clinic-specific metric for preservation. Ask what percentage of their vitrified eggs survive the thaw process.
Browse our clinic directory to find clinics near you and compare their overall IVF outcomes as a proxy for general program quality.
What This Means for You
Step 1, Get an AMH test and antral follicle count. These assessments measure your current ovarian reserve and help predict how many eggs a retrieval cycle might yield. Your RE can interpret these results in the context of your age.
Step 2, Understand the numbers honestly. Egg freezing is not insurance, it is a probability improver. The younger you are and the more eggs you bank, the better your odds. But there are no guarantees.
Step 3, Factor in multiple cycles. Most women under 35 retrieve 10-20 eggs per cycle. If the target is 20+ eggs, plan for 1-2 cycles. Older patients may need 2-3 or more.
Step 4, Compare costs carefully. Get itemized quotes from 2-3 clinics. Include medications, monitoring, retrieval, anesthesia, freezing, and annual storage fees. Ask about multi-cycle discounts.
Frequently Asked Questions
What is the best age to freeze eggs?
Under 35 is optimal. 35-37 is still reasonable. After 38, success rates decline steeply. The sooner you freeze, the better the expected outcomes.
How much does egg freezing cost?
$10,000-$15,000 per cycle plus $500-$1,000/year storage. Most patients need 2-3 cycles. Total: $20,000-$45,000.
How many eggs should I freeze?
15-20 under 35, 20-25 at 35-37, 25-30+ at 38-40 for one child. Each cycle yields 10-20 eggs for younger women.
Sources: CDC NASS; ASRM Practice Committee Guidelines; CDC ART Reports.
Last updated: April 2026
Cost Breakdown by State and Insurance Landscape
Mandated Coverage States vs. Non-Mandate States
As of 2026, 21 states plus the District of Columbia have laws requiring some form of infertility treatment coverage, but the scope varies enormously. Some mandate full IVF coverage including egg freezing for medical indications; others require only diagnostic testing or offer exemptions for small employers. Understanding your state mandate is the single most impactful step for managing costs.
| State Category | Typical Out-of-Pocket | Egg Freezing Included? |
|---|---|---|
| Full mandate (e.g., IL, MA, CT) | $0–$5,000 | Usually yes (medical) |
| Partial mandate (e.g., NY, TX) | $5,000–$15,000 | Rarely |
| No mandate (e.g., FL, GA, OH) | $10,000–$20,000+ | No |
| Employer benefit (any state) | $0–$10,000 | Varies by plan |
Worked example: A 33-year-old patient in Illinois with employer coverage pays approximately $2,500 in copays for one egg freezing cycle (medications + retrieval). The same patient in Georgia, with no state mandate and no employer benefit, pays $12,000–$15,000 out of pocket. Over three cycles, the gap widens to $7,500 vs. $36,000–$45,000.
Medication Costs and Pharmacy Options
Fertility medications (gonadotropins, trigger shots, and supporting drugs) account for 30–40% of total cycle cost. A typical stimulation protocol uses 150–300 IU of FSH daily for 10–12 days. Brand-name medications (Gonal-f, Follistim) cost $75–$125 per 75 IU vial, while approved biosimilars can reduce this by 20–30%. Many specialty pharmacies offer competitive pricing and financial assistance programs for eligible patients.
Storage Fees Over Time
Annual cryopreservation storage costs range from $500 to $1,200 depending on the clinic and facility. For a patient who freezes eggs at 31 and uses them at 38, that is seven years of storage, adding $3,500 to $8,400 to the total investment. Some clinics offer prepaid storage packages at a discount. Factor this long-term carrying cost into your total budget when comparing clinic quotes.
Emotional and Logistical Considerations
The Retrieval Process: What to Expect
An egg retrieval cycle takes approximately two weeks from the start of stimulation medications to the retrieval procedure. During stimulation, you will have morning monitoring appointments (blood draws and transvaginal ultrasounds) every 1–3 days to track follicle growth. The retrieval itself is a 15–20 minute outpatient procedure under conscious sedation. Most patients resume normal activities within 1–2 days, though bloating and mild discomfort can persist for a week.
Decision Framework: Own-Egg vs. Donor Egg
For patients considering both options, the decision often comes down to expected per-cycle success rates, total budget, and time horizon. A patient at age 39 with an AMH of 1.0 ng/mL faces roughly a 15–20% live birth rate per own-egg transfer, while a donor egg transfer offers 50–60%. If budget allows for 3 own-egg cycles at $15,000 each ($45,000 total) versus 1 donor egg cycle at $35,000, the donor egg path delivers a higher probability of success at a comparable or lower total cost.
Legal Considerations by State
Legal parentage of frozen embryos varies by state. Some states treat embryos as joint marital property in divorce proceedings, while others apply contract law based on the original IVF consent form. If you freeze embryos with a partner and later separate, disposition of the embryos is governed by the agreement you signed at the time of creation, which is why clinics require both parties to specify preferences (donate, destroy, or give to one partner) before starting a cycle. Egg freezing avoids this complexity entirely because the genetic material is solely yours.
Data Sources and Methodology
Clinic outcome data on PlainFertility comes from the CDC National ART Surveillance System (NASS), which mandates reporting from every ART clinic in the United States. Egg freezing and embryo freezing outcome rates referenced in this guide are drawn from published peer-reviewed studies and ASRM Practice Committee opinions, since CDC NASS does not separately track preservation-specific cycles. All cost figures are based on published clinic price lists, industry surveys, and patient-reported data collected in 2025–2026.
Every figure on PlainFertility is rendered directly from CDC National ART Surveillance System source data, no number is typed in by an editor. This page draws directly on CDC National ART Surveillance System source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.