DNA question?

my girls brother is in jail. they collected DNA at the seane of the crime. But when they went to dispatch it to the lab the evidence tape was broke and the package be open. they told him it may still be used. can they do that
DNA contamination can only give a false distrustful, not a false positive. So it works for the prosecution, not the defense.
For a DIRECT answer to your question, the answer is Maybe, if the chain of custody can be established to a certainty formerly the court.

Evidence tape is not legally required. It only serves to simplify the tie up of custody.