Sperm / Embryo Freezing

Sperms and Embryos can be frozen for further use through a process called cryopreservation. Cryopreserving involves the same biological steps whether one uses embryos or sperm. In both cases, the production of fertilized embryos is the most expensive step. With embryo cryo, the fertilization step takes place before freezing, whereas with sperm cryo it is done after thawing. Cryopreservation is generally used as insurance against disaster, and reconstitution is a relatively uncommon event. Therefore, the overall costs of sperm cryo are likely to be significantly lower than for embryo cryo. Embryos/Sperms Frozen for over 20 years have also been used.