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Fertility Glossary

Cryopreservation

Storing eggs, sperm, embryos or tissue frozen in liquid nitrogen.

Eggs, sperm & embryos

Cryopreservation is the general term for freezing and storing reproductive cells or tissue at very low temperatures in liquid nitrogen, where biological activity effectively stops. Material can remain stored for years, subject to your consent and the clinic's storage agreement, and annual storage fees usually apply.

Also known as: freezing, cryo, frozen storage

Sources

  • ESHRE/ICMART glossary and ESHRE laboratory guidance

Last reviewed: 8 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.

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