What is Social Freezing?
What is Social Freezing?
- Social freezing is a technique for freezing reproductive cells, allowing them to be safely preserved for many years, even decades.
- Individuals may want to delay parenthood for several reasons, such as prioritising career, travelling or finding the right partner.
- Whatever the reason, social freezing is an excellent option for both men and women who, for various reasons want to conceive a child later in life when natural conception may become more challenging.
- Fertility preservation through vitrification is also used for medical reasons, such as when fertility is at risk due to health conditions or treatments (e.g., cancer therapy).
As age increases, both the quantity and quality of reproductive cells decline. This is particularly significant for women, as age plays a crucial role in fertility. Delaying parenthood can lead to conception difficulties.
The social freezing method offers a great opportunity for those postponing parenthood for personal reasons, such as prioritising career, education, travelling, or finding a suitable partner. Freezing reproductive cells is also used in medically indicated cases, for example, before ovarian removal or cancer treatment, which can negatively impact the quality and quantity of reproductive cells.
This technology gives individuals reproductive, social, and professional autonomy


What is the purpose of social freezing?

What is the purpose of social freezing?
Many people choose to freeze their eggs or sperm for health reasons. Social freezing is also an excellent option for those who, for various reasons, wish to delay parenthood. Freezing reproductive cells serves as a form of insurance for the future when fertility may naturally decline.
Reasons for social freezing may include:
- Age: Fertility naturally decreases with age. If you are delaying parenthood, it is recommended to consider freezing your reproductive cells. This allows you to preserve your fertility at the level it was when the cells were frozen. Common reasons for delaying parenthood include education, career development, finding the right partner, or simply feeling unprepared for this step.
- Cancer: Chemotherapy, radiation therapy, or surgery related to cancer treatment can negatively impact fertility.
- Autoimmune diseases: Conditions like lupus and rheumatoid arthritis, along with their treatments, can lead to fertility issues.
- Reproductive health conditions: Endometriosis and uterine fibroids may contribute to infertility.
Egg Freezing
Egg Freezing
A woman's fertility depends on her ovarian reserve (the number of eggs in her ovaries), which naturally declines with age. Women are most fertile around the age of 25. At 30, fertility begins to decrease, and after 35, the chances of pregnancy drop significantly. Not only does the number of oocytes decline, but more importantly, so does their quality. By the age of 40, only about 5% of women are able to conceive naturally each month they try. Approximately 70% of these women do not achieve pregnancy.
About 10% of women experience a loss of fertility due to premature ovarian failure before the age of 35.
The reason fertility declines with age is that the ratio of good to poor-quality eggs changes over time. At 30, a woman typically needs around six eggs to conceive and give birth to a child. By the age of 43, this number rises to 18 eggs. This is the logic behind IVF, where the chances of creating a healthy embryo increase by retrieving more eggs.
From these statistics, it's clear that at the age when a woman needs the most eggs to conceive, her ovaries produce the fewest. This is why the success rate of IVF significantly decreases with age.
However, with the social freezing method, you can use your 30-year-old eggs even at the age of 40. This means your chances of having a baby at 40 will be the same as when the eggs were frozen.
We recommend freezing eggs ideally before the age of 35. If a woman is healthy, she may still conceive naturally, and the frozen eggs may never be needed. Vitrified oocytes serve only as a "fertility insurance" for the future.
If a woman is considering egg freezing, we recommend consulting an IVF specialist. The doctor will explain the social freezing process, assess the chances of successful vitrification based on the patient's age, and review the results of any necessary tests.
Thanks to our experienced specialists and the most modern equipment, at GENNET we achieve a high success rate in vitrification — around 95% of eggs survive the freezing process.


Who is Egg Freezing Suitable For?

Who is Egg Freezing Suitable For?
We recommend egg freezing for women:
- Who are postponing motherhood for various reasons.
- Who are about to undergo cancer treatment.
- Who need to have their ovaries removed for medical reasons.
- Who are undergoing IVF treatment and want to ensure they are prepared for the unexpected absence of their partner's sperm.
The Egg Freezing Process - Step by Step
1. Booking an Initial Consultation
Book your initial consultation with our IVF specialist. No referral is needed, just schedule an appointment.
You can have the consultation in person at one of our clinics in Prague or Liberec.
2. Consultation with an IVF Specialist
During the initial consultation with our experienced IVF doctor, you will discuss your medical history, particularly in relation to your reproductive health. The doctor may perform a basic gynaecological examination. Based on this information, they will determine the potential course of treatment.
3. Necessary Examinations
To correctly set up an individual stimulation protocol, the doctor needs to know the results of the following examinations:
- Woman's medical history
- Gynaecological examination, vaginal ultrasound
- Hormonal profile, including AMH
- TSH, PRL
- Sexually transmitted diseases
Based on all the results, the IVF specialist will create a personalised stimulation protocol for the patient.
4. Hormonal Stimulation
- Hormonal stimulation typically begins for the patient in the first few days of a new cycle (with the onset of menstruation).
- The ovaries are stimulated with a combination of hormones that the woman administers herself according to the stimulation protocol, which specifies the exact dosage of medication and the timing of administration.
- The stimulation medication contain follicle-stimulating hormone (FSH) and possibly luteinizing hormone (LH).
- The effect of the stimulation is monitored through ultrasound examinations. Usually, two ultrasound checks are required during one cycle of hormonal stimulation.
- The purpose of hormonal stimulation is to create an optimal number of follicles from which eggs can be retrieved for subsequent vitrification.
- Once the desired follicle size is reached, the patient administers a final injection that precedes the egg retrieval.
5. Egg Retrieval
Approximately 14 days after hormonal stimulation, the follicles reach the optimal size for retrieval.
- The egg retrieval is performed under sedation or general anaesthesia, making the procedure painless and lasting 10–15 minutes.
- The procedure is conducted under ultrasound guidance using a special thin needle, which the doctor inserts through the vaginal wall to reach the ovaries.
- During this brief procedure, follicular fluid containing the eggs (oocytes) is aspirated from the ovaries.
- In the laboratory, an embryologist subsequently evaluates the maturity and quality of the retrieved eggs under a microscope.
- About two hours after the procedure, the patient leaves the clinic accompanied by an adult.
6. Egg Freezing
The eggs are then frozen using the most advanced and gentle freezing method -vitrification.
Vitrification is a technique for freezing reproductive cells (eggs, sperm) and embryos, in which the cells are rapidly cooled to a temperature of -196°C within a few seconds. Cryoprotective substances are used during vitrification to protect the cells from freeze damage. The oocytes are then stored in our cryo-storage facility.
The success rate of thawing cells after vitrification at GENNET is 95%.
Sperm Freezing
Sperm Freezing
Men can freeze their sperm at any age, but the quantity and quality of sperm decline with increasing age. The quality of sperm is also affected by the environment in which the man lives and his lifestyle.
- Frozen sperm can be preserved for up to 20 years while maintaining its quality.
- Approximately 80% of sperm survive the freezing process.

Who is Sperm Freezing Suitable For?

Who is Sperm Freezing Suitable For?
Sperm freezing is suitable for men who:
- Spend time in environments with increased levels of harmful substances.
- Engage in risky sports or occupations.
- Are postponing fatherhood for career or personal reasons.
- Plan to undergo a vasectomy and want a backup plan in case they change their minds.
- Are undergoing cancer treatment.
- Live an unhealthy lifestyle, smoke, or spend most of their time in front of a computer.
- Are undergoing any treatment that could affect the quality and safety of their sperm.
- Are undergoing gender transition treatment.
How Does Sperm Freezing Work?
1. Booking a spermiogram appointment
Book your spermiogram appointment. No referral is needed, just schedule an appointment. You can have the examination in person at one of our clinics in Prague or Liberec.
2. Laboratory tests
Before the spermiogram examination, it is necessary to collect blood and urine so that we can carry out statutory laboratory tests for infectious diseases.
If everything is in order, it is possible to perform a spermiogram and then sperm freezing. When making an appointment for a spermiogram, please arrange a time for the blood and urine tests, which must take place before the sperm collection.
3. Sperm Collection
The collection is usually performed through masturbation in one of our private collection rooms with sufficient privacy. In some cases, the collection can be done at home; however, it is essential to deliver the sample to the clinic no later than one hour after collection. The transported sperm must be kept at body temperature and in the dark throughout the journey. In the case of serious health obstacles, the sperm sample is collected using the microsurgical method TESE.
4. Sperm Analysis
This examination is conducted in our embryology laboratory and assesses the volume of the ejaculate, sperm count, motility, and morphology. Sperm analysis values can change over time, so it may be necessary to repeat the collection and examination to obtain a sufficient quantity of quality sperm for freezing.
5. Sperm Freezing
The collected sperm is then frozen using the most advanced and gentle freezing method - vitrification.
Vitrification is a technique for freezing reproductive cells (eggs, sperm) and embryos, in which the cells are rapidly cooled to a temperature of -196°C within a few seconds. Cryoprotective substances are used during vitrification to protect the cells from freeze damage. The sperm is then stored in liquid nitrogen tanks at a temperature of approximately -195°C.
How Much Does Social Freezing Cost?
At GENNET, we provide individualised care for each patient, which is why the final price for freezing reproductive cells is determined by many factors and varies for each patient. During cancer treatments reproductive cells may be frozen to preserve fertility, in these cases health insurance may contribute towards the cost of social freezing.
PRICE INCLUDES:
- Consultation during the treatment cycle
- Tests for HIV, Hepatitis B, Hepatitis C, and Syphilis
- Egg retrieval and general anaesthesia
- Egg freezing by vitrification (max. 6 eggs)
- Storage of eggs for 1 year
PRICE DOES NOT INCLUDE:
- Each additional straw (max. 3 eggs) – 1,100 CZK
- Stimulation medication

PRICE INCLUDES:
- Tests for HIV, Hepatitis B, Hepatitis C, and Syphilis
- Sperm analysis
- Sperm freezing
- Storage of sperm for 1 year