Yes, the medical community has been relying on cryopreservation to preserve sperm cells and oocytes (eggs) for generations already; and umbilical cord blood banking also uses cryopreservation. Acorn uses the same reliable process and adds its proprietary transport media to collect and ship the cells – which all enable lifelong cell preservation and viability. Cells and other human tissues can theoretically be safely and reliably preserved using cryopreservation indefinitely. That means that cryopreservation is a proven method that will reliably allow you to benefit from future medical innovations for many years to come.