Sperm freezing, also known as sperm cryopreservation, is a technique used to preserve sperm for future use. The sperm sample is frozen and stored at extremely low temperatures, typically −196°C, to maintain sperm viability over prolonged periods. Unlike traditional freezing, vitrification prevents the formation of ice crystals and the use of high concentrations of cryoprotectants, which can damage cells.
This technique is particularly useful for men who want to preserve their fertility before undergoing medical treatments that could affect their ability to conceive in the future, such as chemotherapy or radiotherapy.
Sperm freezing allows gametes to be stored at very low temperatures for future use. This procedure is vital for many individuals and couples facing difficulties conceiving naturally.
Cryopreservation is widely used in assisted reproduction to preserve gametes and embryos for future use. In our laboratory, sperm cryopreservation is used to preserve sperm samples for future fertility treatments under carefully controlled conditions.
At IVF-Life, providing patients with the latest advances in fertility is essential. Therefore, sperm vitrification is an innovative technique supported by the most advanced technology, increasing pregnancy rates.
Since sperm are small cells with little internal volume, semen can be frozen using a controlled slow-freezing process designed to minimise cellular damage during cryopreservation.
After the initial consultation, the semen sample is collected. If sperm cannot be obtained through ejaculation, an alternative technique such as sperm retrieval through aspiration or testicular biopsy may be used.
Once the semen sample is obtained, it is analysed in the laboratory to evaluate the quantity and quality of the sperm. Cryoprotectants are added to the semen to protect the sperm during the freezing process.
The sample is gradually cooled until it reaches a temperature of -196ºC.
Frozen sperm is stored in sperm banks that are carefully monitored, where they can remain viable for many years to be used when the patient needs them.
Sperm freezing is commonly used in assisted reproduction procedures such as in vitro fertilisation (IVF) or intracytoplasmic sperm injection (ICSI). In these treatments, frozen sperm can be thawed and used for fertilisation when a cryopreserved semen sample is required.
Frozen sperm is routinely used in assisted reproduction treatments when appropriate. Treatment outcomes depend on several factors, including sperm quality and the assisted reproduction technique used. Sperm cryopreservation is also used for donor sperm samples, allowing donated sperm to be stored for future use in assisted reproduction treatments.