Egg Freezing

A premier programme gives you direct access to experienced and highly skilled fertility doctors and embryologists to make your treatment as personalised and successful as possible.


Egg freezing, also called oocyte vitrification, is an advanced method for preserving women’s fertility. As all we know, women’s fertility goes down when they are getting older. Especially when the age beyonds 35, the fertility will drop dramatically. If women do not want to have a baby right now and regret later, the best thing to do is to preserve their fertility as soon as possible. Earlier to freeze their eggs, higher chance to have a baby in the future. 

Freezing eggs is the most difficult technique in the IVF field, because the eggs are the largest cells in the human body and contains a lot of water. In order to freeze eggs and preserve them properly, it needs to remove the water from inside the eggs and replace with the right amount of cryoprotectants. This process is the most difficult part in the embryology field. Without a lot of experience and correct freezing protocol, a lot of ice could be formed inside the eggs. The ice is extremely detrimental to the viability of the eggs, as when we thaw them the ice will destroy the structure of the cytoplasm and damage the chromosomes. 

For the best chance of your future, choosing the right clinic for egg freezing is very important. Before you decide to go with any clinics, you must ask some same questions: 1. how many eggs have they frozen and cycles have they done? 2. What is the results from thawed frozen eggs and how many thawing cycles have they done? 3. How many babies have been born from thawed frozen eggs?

Egg freezing process

The whole egg freezing treatment cycle includes 5 steps, and takes around 2-3 weeks to complete:

Step 1 Initial Consultation: The first step is to book your appointment for an initial consultation with a fertility specialist to ask all questions and learn about your fertility before making a decision.

Step 2 Fertility Check-Up: Once you decide to go ahead, you can book an appointment for check-up of your fertility. During the appointment, you will be asked for an ultrasound scan to check your pelvic anatomy, notably your ovaries and uterus. You will also be asked to do some blood tests, including hormone levels to assess your ovarian function. According to the results, our specialist will make a personalised treatment plan for you for ovarian stimulation, to safely and effectively result in the best number of eggs to freeze for you. After this appointment our nursing team will help you to sign relevant consents as well as teach you the correct use of the prescribed medications.

Step 3 Medications: After the consents are signed and you are ready, our nursing team will tell you when to start injection of medications typically daily for two weeks. During this time, you will need to visit the clinic 3-5 times for scan and blood tests to monitor your progress and adjust your medications if necessary. When a sufficient number and size of follicles are seen by scan in your ovaries, you will then be advised to adiminister another injection, called "trigger injection" about 36 hours before egg collection is scheduled. The trigger injection causes the final maturation of your eggs as well as loosen their attached to the follicle wall, permitting easier aspiration at the egg collection.

Step 4 Egg Collection: You will be sedated for 20-30 minutes while your eggs are collected by one of our fertility specialist doctors. One or two hours later you can be accompanied home to rest and most women have no major problems to return back to normal life or work next day. We emphasise that you should have someone to accompany you home after egg collection.

Step 5 Egg Freezing Process: After egg collection, eggs will be cultured for a couple of hours in the laboratory before we start to freeze the mature eggs, usually 80-90% of the eggs collected. All your mature eggs will be assessed and frozen very carefully using the technique called vitrification by our skilled embryologists. After freezing your eggs will be stored under -196 degree liquid nitrogen for long term storage.

Why us

WFCA (West Fertility Clinical Associates) is a premier programme giving you direct access to experienced and highly skilled fertility experts to make your treatment as personalised and successful as possible. WFCA only signs with the doctors who have the reputation and many years' experience in the field. All treatments are carried out by qualified doctors under their licenses/practising privileges. We use the modern communication technologies to let you easily keep connection with us. Once you started your cycle, you can have unlimited access to our professional advice. You can contact us at any time from anywhere.

We commit to providing the top quality services to all of our patients from the beginning till the end of your treatments. The doctor you see is the highly skilled fertility expert with over 30 years’ experience in fertility; The consultant embryologist you talk with is the very experienced senior embryologist with a lot of success in the field. 

We aim to provide the best fertility services in the aspects of not only the technologies but also the customer service. We treat your suggestions or advices as our most valuable treasures. Anytime during your treatment or even not in the treatment, please feel free to leave your feedback to us. 

All communications regarding your treatment will be done directly between you and our most experienced and very successful IVF expert, you can ask any questions via live chat or any other ways we provide at any time for the most professional answers. WFCA does not use admin or coordinator with low level professional knowledge and experience to connect with you as we know how important for you to get the correct information from enquiries at the beginning and how important for you to get sufficient and correct support during your treatment.

Dr Wang and Egg Freezing

Leading the best egg freezing technology in the country.

Dr Wang was initially trained on vitrification from Sydney IVF when he was working in General Navy Hospital IVF unit in 2007. Since he established the egg freezing technology in UK in 2009, he has performed many thousand egg freezing cycles and more than a thousand egg thaw cycles with average survival rate of 96%. Most recent result shows even up to 98%. The egg freezing programme led by him from his previous clinic had become the largest in the country since 2016. Dr Wang's first egg freezing baby was born in 2011, since then it has been many hundred babies born from his egg freezing technology. Dr Wang is now working hard and dedicating to building up another biggest egg freezing programme in the country.

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If you have any enquiries, please contact us via online chat, online form, or email. Please click here to book an appointment directly. You can also dial 02079711096 to speak to us. We would be very happy to assist you at any stage.