Sperm cryopreservation stands for the freezing of a mixture of sperm solution and cryoprotectant and the storage of the frozen sample in a cryotank.
There are a number of reasons why you may wish to have a sperm sample frozen;
Before a medical or surgical procedure that may affect your sperm production (such as chemotherapy, radiotherapy).
If you, the male partner, is concerned that you may not be able to produce a semen sample on the day of IVF treatment.
If you, the male partner, will not be available on the day of the IVF treatment to produce a semen sample.
If your, the male partner’s, ejaculate contains very low numbers of sperm and there is a risk that on the day of the IVF treatment, your ejaculate may contain no sperm.
Sperm from semen ejaculates and sperm from testicular extractions can be frozen and stored. In cases of extremely low numbers of sperm a device called the ‘cell sleeper’ can be used to freeze small numbers of sperm collected using a microneedle.