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