Who can become a sperm donor?

Any man can apply to be a sperm donor, but at Cryos only 5-10% of all applicants go on to become sperm donors. Most applicants are turned down because of the quality of their sperm. To become a sperm donor, your sperm quality needs to be above average. This is because donor sperm is kept in a freezer tank at a temperature of -196 degrees centigrades. Under these conditions, it is primarily high-quality sperm that is still viable for fertility treatment once it has been thawed. 

Find out more about becoming a sperm donor here.