Freezing sperm to manage potential medical risks
If you need to have treatment for cancer, it could affect your fertility – sometimes permanently. So if you’d like to have the option to have children in the future, we recommend considering sperm preservation.
Both chemotherapy and radiotherapy can affect your sperm production, and once you begin this treatment the sperm could already carry genetic damage, making it too late to collect and preserve your sperm.
How does sperm freezing work?
We can collect and freeze some of your semen, containing sperm, before you start chemotherapy or radiotherapy treatment. You will be given a private room for collection, and our scientists will prepare and freeze the sperm quickly using a protective solution, and lowering the temperature gradually.
If, due to illness, there are no sperm in the semen, we may be able to collect sperm directly through a testicular biopsy. This surgery is performed under general anaethesia. ICSI treatment is recommended when you are ready to use the sperm collected in this way.
Sperm can be stored frozen for many years and we find that between 25% and 50% will survive the sperm freezing process.