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Egg Freezing — Fertility Preservation

Oocyte Cryopreservation Fertility Preservation Vitrification Technology 12+ Years Experience

What is egg freezing?

Egg freezing — medically known as oocyte cryopreservation — is the process of stimulating the ovaries to produce multiple eggs, retrieving them, and then freezing them using a technique called vitrification (ultra-rapid freezing) for use at a later date. The eggs are stored and can be thawed, fertilised, and transferred when you are ready to conceive.

Egg freezing gives women the option to preserve eggs at their current quality — before age-related decline, medical treatment, or life circumstances reduce the chances of natural conception. It is no longer considered an experimental procedure. Egg freezing is offered at Cloudnine Hospital Kompally by Dr Bhavana Nallapu, MBBS, DGO, FRM, MRCOG — a fertility specialist with 12 years of experience and over 30,000 procedures performed.

Who should consider egg freezing?

Egg freezing is appropriate in any situation where preserving egg quality now is medically or personally important:

Women in their late 20s or early 30s not yet ready to conceive Diagnosed with cancer — before starting chemotherapy or radiotherapy Ovarian surgery planned — risk of reduced ovarian reserve Early menopause (premature ovarian insufficiency) — time-sensitive Strong family history of early menopause Autoimmune conditions requiring immunosuppressive treatment Women without a current partner who wish to preserve future options Couples undergoing IVF — surplus eggs may be frozen if embryo freezing is not preferred

The egg freezing process — step by step

Ovarian Reserve AssessmentBlood tests (AMH, FSH, LH, oestradiol) and an antral follicle count on ultrasound are done to assess how many eggs your ovaries are likely to produce in response to stimulation. This determines the stimulation protocol.

Hormone StimulationDaily self-administered injections stimulate the ovaries to grow multiple follicles simultaneously over 10–14 days. Dr Bhavana monitors response with ultrasound scans and blood tests every 2–3 days.

Trigger InjectionOnce follicles reach the appropriate size (18–20mm), a trigger injection induces final egg maturation. Egg retrieval is scheduled exactly 34–36 hours later.

Egg RetrievalEggs are retrieved under light sedation using a thin needle guided by ultrasound — through the vaginal wall. The procedure takes 20–30 minutes. Same-day discharge.

Vitrification (Flash Freezing)Mature eggs are immediately processed and vitrified using an ultra-rapid freezing technique that prevents ice crystal formation — which can damage cells in slower freezing methods. Vitrification preserves egg integrity effectively.

StorageFrozen eggs are stored in liquid nitrogen at -196°C in the IVF laboratory. Storage duration depends on regulatory guidelines and your individual needs — discussed at consultation.

When You're Ready — Thaw, Fertilise & TransferFrozen eggs are thawed, fertilised via ICSI (sperm injection), and the resulting embryo transferred into the uterus. Success rates depend on the number and quality of eggs frozen, and age at freezing.

Duration & Timelines

Stimulation phase	10–14 days of daily injections with monitoring scans every 2–3 days.
Egg retrieval	20–30 minutes under light sedation. Same-day discharge.
Total process	Approximately 2–3 weeks from assessment to completed retrieval.
Clinic visits	5–7 visits for assessment, monitoring, and retrieval.
Recovery after retrieval	Rest same day. Return to normal activity within 24–48 hours.
Admission required?	No. Egg retrieval is a day procedure — no overnight hospital stay.

Recovery & Aftercare

Rest on the day of retrieval. Return to desk work within 24–48 hours in most cases.

Mild bloating and pelvic discomfort for 2–3 days after retrieval are normal and self-limiting.

Avoid strenuous exercise, swimming, and sexual intercourse for 5–7 days after retrieval.

Your next menstrual period returns within 2–3 weeks. Fertility is unaffected by the egg freezing process.

A follow-up appointment confirms recovery and explains the storage plan and next steps.

Seek immediate review if you develop severe abdominal pain, rapid bloating, or very reduced urine output after retrieval — signs of ovarian hyperstimulation syndrome (OHSS).

Success & Outcomes

Egg Survival on Thaw

With modern vitrification, approximately 80–90% of frozen eggs survive the thawing process. Survival rates are highest for eggs frozen at younger ages when egg quality is higher. Results vary by individual case.

Pregnancy Rates

Pregnancy rates from frozen eggs depend on age at freezing, number of eggs frozen, and egg quality. Women under 35 who freeze 10–15 mature eggs have a reasonable cumulative chance of achieving a pregnancy. Dr Bhavana discusses realistic, individualised projections at consultation.

Why Age at Freezing Matters

Egg quality declines with age — particularly after 35. An egg frozen at 30 retains the quality of a 30-year-old's egg permanently, regardless of how old you are when you use it. This is the core benefit of egg freezing: locking in current egg quality.

How Many Eggs to Freeze

There is no fixed number — it depends on your ovarian reserve, age, and intended family size. Dr Bhavana calculates a target egg number based on your individual parameters. More cycles may be needed if the ovarian reserve is lower.

Frequently Asked Questions

No. The eggs retrieved during an egg freezing cycle are eggs that would have been lost in that natural menstrual cycle regardless — only one egg is normally selected by the body each month, and the rest disappear. Stimulation retrieves those same eggs before they are lost. Your ovarian reserve — the total number of follicles you have — is not diminished by the freezing process itself.

Egg quality and quantity are highest in the late 20s to early 30s. The ideal window is before age 35 — response to stimulation is better, more eggs are retrieved per cycle, and egg quality is higher. That said, women in their mid to late 30s can still benefit from egg freezing if ovarian reserve is adequate. Dr Bhavana assesses ovarian reserve first and gives a realistic picture of what retrieval is likely to achieve at your current age.

Frozen eggs stored in liquid nitrogen at -196°C are biologically stable — laboratory studies show no deterioration in egg quality over extended storage periods. Regulatory storage limits vary. In India, the ART Act 2021 governs fertility preservation storage. Dr Bhavana explains current storage regulations and options at your consultation.

No — egg freezing improves your chances but does not guarantee pregnancy. Success depends on how many eggs were frozen, their quality at the time of freezing, survival on thaw, fertilisation, and embryo quality. Dr Bhavana does not offer guarantees. What she does offer is a transparent, numbers-based conversation about what your frozen eggs are realistically likely to achieve.