How long do sperm live after ejaculation?

Answers from Landon Trost, M.D.

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.


Landon Trost, M.D.

May 01, 2015 See more Expert Answers