A complete sperm production takes 96 days. In principle, a spermiogram can be made after cancer treatment after about 12 weeks. However, the regeneration of fertility depends on various factors, such as the level of the treatment dose or the age of the patient. Often, the spermiogram is already limited before cancer treatment. Seek the advice of your treating physician before scheduling a spermiogram. Especially in the case of testicular tumor, full recovery can take up to three years, and in certain cases up to nine years.