One can also avail the facility of Sperm Freezing and Embryo Freezing at our clinic. The process is also known as Cyropreservation. The preservation of sperm and embryos can be achieved with the use of a technique called slow freezing. This process cools the sperm and embryos very slowly to sub zero temperatures. Cyropreservation is used to store semen and embryos for an indefinite period. It is typically effective if men face a possibility of sterilization due to vasectomy, prostate or testicular surgery, radiation or chemotherapy etc. At times semen is also frozen prior to IVF as back up, incase of difficulty in semen collection on the day of oocyte retrieval. Ejaculated epididymal and testicular tissue can also be cryopreserved.Freezing of embryos saves them for future use without the necessity of another egg collection.