A sperm bank, or cyrobank, is a facility that collects, freezes, and stores sperm using cryopreservation. Cryopreservation is the process of freezing tissue. In the case of sperm banking, a man’s semen is frozen for future use. Frozen sperm must be stored in extremely cold temperatures (-196 F), but in order to ensure that the fewest possible sperm are damaged, the freezing must be gradual.

Specimens kept at a sperm bank can be either donated by men to be used anonymously by another couple or woman hoping to have a child via IVF or is provided by men who want to preserve their own sperm for future use.

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SpermBankDirectory.com is sponsored by Michael A. Werner, MD, FACS, founder of Maze Health and a board-certified urologist who specializes in male infertility and sexual dysfunction.