Egg Freezing in Chennai

Egg freezing: clinically, oocyte cryopreservation: is the process of retrieving eggs from your ovaries and storing them, frozen, for use at a later date. It preserves your eggs at the age you freeze them. A woman who freezes eggs at 32 and uses them at 39 is, in fertility terms, using the eggs of a 32-year-old.

That single fact is the whole point of the treatment. Female fertility declines with age not primarily because the uterus ages, but because eggs decline in both number and chromosomal quality: a process that accelerates through the mid-thirties. Freezing pauses that clock for the eggs you store, though it does nothing to slow the decline of the eggs left in your ovaries.

Mechanically, egg freezing is the first half of an IVF cycle: ovarian stimulation, monitoring, and egg retrieval. Where an IVF cycle would go on to fertilise those eggs, egg freezing stops at retrieval and preserves them unfertilised. At Yaal Fertility Centre the eggs are then vitrified: flash-frozen so rapidly that ice crystals, which would otherwise destroy the delicate cell, have no time to form. Vitrification achieves egg survival rates above 95% on thawing, and it is the advance that made egg freezing genuinely viable; older slow-freezing methods were considerably less reliable.

Later, when you are ready, the eggs are thawed, fertilised with sperm using ICSI, and the resulting embryo is transferred to your uterus: the second half of an IVF cycle, run years after the first.

The honest answer is earlier than most women do it, and the reason is arithmetic rather than opinion.

Egg freezing preserves eggs at their current quality. Because both egg quality and egg quantity decline with age, slowly through the twenties, then more steeply from the mid-thirties, the eggs you freeze at 31 are more likely to produce a healthy pregnancy than the eggs you freeze at 38. You will also retrieve more of them per cycle, because ovarian reserve is higher.

The practical window is roughly late twenties to mid-thirties. Freezing before about 35 gives materially better outcomes per egg, which is why the number of eggs recommended rises with age: around 15–20 eggs for a woman under 35, but 20–25 for a woman aged 35–38, because more eggs are needed to compensate for lower per-egg quality.

There is a tension here worth naming. Freeze very early and you may never need the eggs, having conceived naturally: you will have paid for insurance you did not use. Freeze late and the eggs may not be good enough to deliver what you hoped for. Most women land somewhere in between, and the right point depends on your own ovarian reserve rather than your birthday alone.

This is why the first step is not a decision but a test. An AMH blood test and antral follicle count measure your actual ovarian reserve, which varies widely between women of the same age. Two 34-year-olds can have entirely different reserves, and therefore entirely different advice. Dr. Rukkayal will interpret those results with you before you commit to anything.

Not every frozen egg becomes a baby, and understanding why is the key to understanding the numbers.

Each egg passes through a series of stages, and some are lost at every one. Of the eggs retrieved, only the mature ones can be frozen. Of those frozen, over 95% survive thawing with vitrification: but not all. Of the eggs that survive, not all will fertilise. Of those that fertilise, not all develop into good-quality embryos. And of the embryos that do develop, not all are chromosomally normal or will implant.

The attrition at each step is why a single frozen egg is a poor bet and why a bank of eggs is needed. Broadly, we suggest around 15–20 eggs for women under 35 and 20–25 eggs for women aged 35–38 to give a reasonable chance of a future pregnancy. The number rises with age because the proportion lost at each stage rises with age.

One cycle does not always yield the target number. Depending on your ovarian reserve and how you respond to stimulation, you may need more than one retrieval cycle to bank enough eggs: and it is far better to know that possibility before you start than to discover it after the first cycle. Your AMH and antral follicle count give a good indication of what to expect.

No number is a guarantee. Freezing 20 eggs materially improves your odds; it does not promise a baby, and any clinic saying otherwise is overselling.

Two different numbers get quoted in egg-freezing conversations, and conflating them is the source of most disappointment.

Survival rate is the proportion of eggs that survive thawing intact, above 95% with vitrification. It is a genuine achievement and a real advance over older freezing methods. But it says nothing about babies. It only means the egg came through the freeze.

Pregnancy rate is what you actually care about, and it depends overwhelmingly on the age at which the eggs were frozen, not the age at which they are used. Those figures reflect the quality of the eggs going into storage.

The encouraging finding is that eggs do not deteriorate in storage. Frozen at −196°C, biological activity effectively stops. Eggs stored for ten years and more have produced healthy pregnancies, and there is no evidence that duration of storage harms them. Time in the tank is not the enemy; age at freezing is.

So the honest summary is this: egg freezing works, and it works considerably better than it did a decade ago, but it is a way of improving your future odds, not a guarantee of a future child. We would rather you go in with clear eyes.

Not all egg freezing is elective. For some women it is urgent, and the situation is entirely different from planning ahead around career or circumstances.

Treatments that can damage the ovaries: chemotherapy and radiotherapy in particular: may substantially reduce or end fertility. Freezing eggs before that treatment begins preserves the option of a genetic child afterwards. This is often called fertility preservation, and it is one of the most valuable things fertility medicine offers.

Egg freezing on medical grounds is also considered for women facing surgery that will affect the ovaries, women with a family history of early menopause, women with diminished ovarian reserve identified on testing, women with endometriosis that threatens ovarian tissue, and people undergoing gender-affirming treatment.

Where cancer treatment is involved, time is the critical constraint, and coordination between your oncologist and the fertility team matters more than anything else. A stimulation cycle takes around two weeks, and whether that window exists must be decided jointly and quickly. It very often does exist, and it is worth asking about at the point of diagnosis rather than after treatment has begun: a great many patients are never told the option was available to them.

If you are facing treatment that may affect your fertility, contact us promptly and we will work to your oncology timeline.

From the first injection to the eggs going into storage, an egg freezing cycle takes roughly two to three weeks. The commitment is real but contained: and, unlike IVF, it ends without a two-week wait or a pregnancy test.

Assessment comes first: AMH blood test and an ultrasound antral follicle count to measure ovarian reserve, which determines both your medication protocol and a realistic expectation of how many eggs you are likely to get.

Ovarian stimulation runs for 10–14 days. You self-administer daily hormone injections: the needles are fine, similar to insulin pens, and most women manage them without difficulty after the first. During this period you attend for ultrasound scans and blood tests every few days so we can watch your follicles develop and adjust the dose. Bloating, tenderness, and mood changes are common and settle after the cycle.

Trigger and retrieval: once the follicles are mature, a trigger injection is timed precisely, and the eggs are retrieved 36 hours later. Retrieval is an ultrasound-guided procedure performed under sedation, takes 15–20 minutes, and you go home the same day. Expect to take the day off, and possibly the next.

Vitrification and storage: mature eggs are flash-frozen the same day and moved to our cryopreservation facility, which is monitored continuously with backup systems. You will be told how many eggs were retrieved and how many were mature enough to freeze: and those two numbers are rarely the same, which is worth knowing in advance.

The main risk to be aware of is ovarian hyperstimulation syndrome (OHSS), where the ovaries over-respond to medication. Severe cases are rare, and the risk is managed by tailoring your dose to your ovarian reserve and monitoring you closely throughout: which is what all those scans are for.