[PeterPrinciple]

Wouln't you think that DNA not properly stored would break down over time? And of course it wouldn't be a match. anyone have info on this???

[Stone Mountain]

Wouln't you think that DNA not properly stored would break down over time? And of course it wouldn't be a match. anyone have info on this???

DNA, not properly stored can degrade somewhat over time, although it depends on a lot of conditions - DNA has been extracted from people dead for many years or from a spot of blood left outdoors. If the sample degraded, however, they wouldn't come up with a non-match - they would just say that there is not enough DNA left to do a test.

There's no indication here that the DNA wasn't properly stored though - the police routinely store rape kit specimins and other evidence long after the case has been "closed."