Why preserve fertility?
The biology is simple and a little unforgiving: egg quantity and quality decline with age, slowly through the 20s, more steeply through the 30s, and rapidly after 37. The number of eggs you have at 30 is meaningfully better than what you'll have at 35, and dramatically better than at 40. If circumstances mean you can't or don't want to try for a pregnancy now, fertility preservation lets you store today's biology for a future use.
Two broad reasons to preserve:
- Medical: Before chemotherapy, radiation, or surgery that may damage the ovaries. Before treatment for endometriosis. With a family history of early menopause. With diminished ovarian reserve detected young.
- Personal: Not in a position to start a family yet, but wanting to protect future options. This used to be called "social egg freezing"; the better framing is just "fertility planning."
Egg freezing vs embryo freezing
The cycle is the same up to retrieval. After retrieval:
- Egg freezing — mature unfertilised eggs are vitrified individually. You preserve maximum flexibility; you don't have to choose a partner or sperm source today.
- Embryo freezing — eggs are fertilised with partner or donor sperm, cultured to blastocyst stage, and frozen as embryos. Per-vial outcomes are slightly higher because fertilisation is already verified. But ownership and consent become more complex, especially if the relationship changes later.
For a single woman preserving fertility, egg freezing is usually the right choice. For a couple ready to commit to using these for future children together, embryo freezing offers a small statistical edge.
How many eggs do you need?
Aim for these mature-egg targets, by age:
- Under 35: 15–20 mature eggs — roughly 60–70% chance of at least one live birth.
- 35–37: 20–25 mature eggs — roughly 50–60% chance.
- 38–40: 25–30 mature eggs — roughly 40–50% chance.
- Over 40: Yields drop steeply; we discuss expectations honestly.
Most women need 1–3 stimulation cycles to reach those targets. Planning for that up front matters for budget and time.
The freezing process — step by step
- Pre-cycle workup — AMH, antral follicle count, baseline ultrasound, infectious screening.
- Ovarian stimulation — 10–14 days of FSH/LH injections with serial monitoring.
- Trigger and retrieval — identical to an IVF cycle. Same-day discharge.
- Vitrification — mature eggs are flash-frozen at high speed using cryoprotectants. Embryos (if doing embryo freezing) are cultured for 3–5 days then vitrified.
- Storage — held in liquid nitrogen at the storage facility. Annual storage fees apply.
- Future use — when you're ready, eggs are warmed, fertilised, and embryos transferred; or frozen embryos are warmed and transferred directly.
Success rates from frozen eggs / embryos
Modern vitrification has dramatically improved post-thaw survival. Roughly:
- Egg survival after warming: 80–90% with modern vitrification.
- Fertilisation rate of warmed eggs: 65–75%.
- Per-egg live-birth rate: 5–10% for eggs frozen under 35, lower for older.
- Per-frozen-embryo live-birth rate: 30–50% depending on the embryo's age at freezing.
This is why egg counts matter so much — 5–10% per egg means you need many eggs to have a strong cumulative chance.
Cost in Hyderabad
A complete egg freezing cycle (stimulation, retrieval, freezing, first year of storage) typically costs ₹1.5L–₹2.5L in Hyderabad in 2026. Annual storage fees: roughly ₹15,000–₹25,000 per year. Future thaw and embryo transfer cycle: an additional ₹50,000–₹1L when the time comes.
Realistic expectations
Freezing buys you an option, not a guarantee. The eggs you bank today are biologically the same age forever; that's the win. But you still need a healthy uterus when the time comes, a sperm source, and the willingness to go through IVF. About 40–50% of women who freeze eggs eventually use them. Those who do use them often succeed; the eggs are preserved at their best.
How I work
For medical indications (cancer, anticipated surgery), I treat fertility preservation as urgent and coordinate tightly with the relevant specialists. For elective preservation, I'll give you a realistic projection of how many eggs you'll likely produce per cycle based on your AMH and antral follicle count, and a candid conversation about whether the timing and target make sense for your situation.
Considering fertility preservation?
A consultation gives us the workup we need to plan realistic targets and timing.
Book at KIMS Fertility (opens in a new tab)Frequently asked questions
The questions patients ask me most often about freezing eggs or embryos.
What's the best age to freeze my eggs?
As young as feasible. Egg quality declines with age, steepest drops after 37. Late 20s to early 30s gives the best statistical chance. Late 30s still worth doing if right for circumstances, but yield is lower.
How many eggs do I need to freeze?
15–20 mature eggs under 35; 25–30 if 35+. Those give a 50–70% chance of at least one live birth. Most women need more than one cycle to reach the target.
Can frozen eggs/embryos be stored forever?
Effectively yes. Vitrified eggs and embryos in liquid nitrogen don't deteriorate measurably. Pregnancies after 10+ years documented.
What's the cost in Hyderabad?
A complete cycle (stimulation, retrieval, freezing, first year storage): ₹1.5L–₹2.5L. Storage: ₹15,000–₹25,000/year thereafter.
Egg or embryo freezing — which?
Embryo freezing slightly higher per-vial outcomes (fertilisation verified). Egg freezing is right when no current partner or want flexibility. Decision is personal as much as medical.
Does freezing guarantee a pregnancy?
No. Buys you the option of trying IVF later with younger eggs. Doesn't guarantee — still need a uterus, sperm source, willingness to go through IVF.
Is the egg retrieval the same as IVF?
Yes. Stimulation and retrieval identical to standard IVF. Difference is what happens next — eggs frozen rather than fertilised and transferred.
Can I freeze eggs after cancer diagnosis?
Yes, and we treat as urgent. Standard of care before gonadotoxic chemo or radiation. Most centres prioritise these patients and can complete a cycle within 2 weeks.