Egg Freezing

Egg Freezing

Female Fertility Preservation

Egg freezing is one way of preserving a woman’s fertility so she can try to have a family in the future. It involves collecting a woman’s eggs, freezing them and then thawing them later on so they can be used in fertility treatment.

Some women freeze their eggs because they have a medical condition or are undergoing treatment that affects their fertility. It can also be used by women who aren’t ready or able to have children and want the chance of conceiving in the future.

A woman’s chances of conceiving naturally fall as she gets older because the quality and number of her eggs drops. Egg freezing is an attempt at preserving fertility by freezing the eggs when the woman is young and the eggs are of the highest quality.

Egg freezing using vitrification (also called Oocyte Vitrification) is offered to women who are at risk of compromising fertility often because of advancing maternal age, a family history of premature ovarian failure or before the start of some cancer treatments. Egg vitrification can be used by women who want to delay having their family for social reasons or because they don’t currently have partner and are concerned about decreasing fertility with increasing age. 

We use the very latest vitrification technique for cryopreservation of oocytes, a process which uses a much faster cooling rate to ensure optimal egg survival. The oocytes are stored for later use in a secure monitored liquid nitrogen tank. Oocytes can be kept cryopreserved for 10 years in the first instance and up to 55 years in total in certain circumstances.

During a woman’s lifetime, approximately 1-2 million eggs develop in her ovaries, many of these disappear before puberty. A woman of childbearing age has from 200,000 to 400,000 eggs, and approximately 400 of them will mature and have the potential to fertilise. As a woman’s age increases, the quality of her eggs decrease.

If a woman of childbearing potential is not planning to have a child at the moment, vitrification of the eggs may provide a better chance of getting pregnant later in life. 

We recommend egg freezing (vitrification) in the following cases:

  • Before the initiation of cancer treatment: chemotherapy may result in damage to the eggs
  • Other health-related reasons: e.g., when ovaries must be removed
  • Women of childbearing age who choose to delay having children (also called Social Egg Freezing)


Cryopreservation (freezing) is a procedure which enables us to store sperm, eggs or embryos in a frozen state at extremely low temperatures. If there are surplus good quality embryos available after the embryo transfer, they can be cryopreserved and then used in subsequent treatment cycles.

Cryopreservation can also be used to freeze and store sperm, for example before the start of chemotherapy or when the partner cannot produce a fresh sperm sample for treatment on the day of egg collection.


We use a method of cryopreservation called Vitrification which uses highly concentrated solutions and cryoprotectant to “freeze” eggs and embryos quickly therefore reducing the amount of damage which may occur to them during the process.

Vitrification is a method for long-term preservation of oocytes or sperm through the rapid cooling of cells. The principle of vitrification is the use of highly concentrated solutions of cryoprotective agents (substances protecting cells from damage from frost) in the freezing medium and subsequent abrupt hypercooling of cells (≥1000°C/min) at below -150 °C.

Differences between vitrification and cryopreservation

During conventional cryopreservation, lower concentrations of cryoprotective solutions are used, and the cells are frozen very slowly (±0,3°C/min). Although no water crystals are produced inside the cells during this procedure, such crystals are produced in the freezing medium, which can lead to their damage. During vitrification, formation of water crystals is avoided and the success of cell thawing ranges around 95%.


We know that cost is usually a concern when patients are considering treatments. We aim to be as transparent and helpful as possible and have listed our typical Egg Freezing costs below. There may be additional service charges should your particular case need them and these would be discussed with you based on your individualised treatment plan prior to you starting a treatment. Please refer to our full price list here for more details or please feel free to contact us.

  • Egg Freezing - costs

    • First appointment
      £200.00 - £290.00

      Initial Consultation (£200) or Female Fertility Assessment (£290)

    • Pre-treatment screen - Patient

      Mandatory screening of Sexually Transmitted Diseases (STD) as per the HFEA regulations, needs to be tailored to the individual requirement

    • Stimulation Medication
      approx. £1,500.00 - £2,000.00

      Can vary a lot depending on individual requirements, medical history, response to stimulation medication and other factors

    • Sedation Anaesthesia
    • Egg Freezing

      INCLUDES: Nurse Consultation • Monitoring ultrasound scans • Monitoring bloods • 2 supportive sessions of Counselling (if required) • Egg Collection procedure • Egg Freezing • Storage up to 12 months

    • Egg Freezing 3 CYCLE PACKAGE

      INCLUDES: Nurse Consultation (for every cycle) • Monitoring ultrasound scans and monitoring bloods (up to 3 cycles) • 2 supportive sessions of Counselling (if required, up to 3 cycles) • Egg Collection procedure (up to 3 cycles) • Egg Freezing (up to 3 cycles) • Storage up to 12 months from the first freeze event.

      Clinical criteria may apply. All 3 cycles to be completed within 9 months of purchase. A cycle interrupted prior to Egg Collection procedure is subject to a fee of £400 and will be disregarded from the Egg Freezing 3 cycle package. The package is considered complete once all three Egg Collection procedures have been performed.

    • Annual Storage of Egg, Sperm or Embryo up to a period of 12 months


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+44 020 8209 3226

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