How long does it take to get DNA from sperm?

Sperm DNA can be detected for a long time.

In fact, as long as sperm is present, its DNA can be detected no matter how long it has passed. Because DNA is a very stable genetic material, it will not change or disappear over time. However, the quantity and quality of sperm may gradually decrease over time, which may affect the accuracy of DNA testing. Therefore, if DNA testing is required, it is best to collect a sample and submit it as soon as possible.

If there is such a need, it is recommended to consult a professional identification agency or medical institution for accurate information.