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Sperm: How long do they live after ejaculation?

The life span of sperm after ejaculation depends on the circumstances.

Ejaculated sperm remain viable for several days within a woman's reproductive tract or in nutritive liquid (culture medium) in a lab setting. Fertilization is possible as long as the sperm remain alive — at least five days.

Sperm also can be preserved for years when semen is frozen.

Last updated: May 1st, 2015

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