The stripper has admitted during press reports that she's also previously been paid to do more than a dance. Maybe she had consential sex with someone at the party, the guy refused to pay so she figured she'd claim rape as payback.
As for what Ga does with the DNA, I can only speak about procedures with CODIS (Combined DNA Index System). CODIS is owned and operated by the FBI and the states sign a contract with them to use the system. The FBI does not allow a state to run a DNA profile through CODIS looking for hits unless that profile has been matched to a crime already entered into CODIS. So the DA can't request all of these guys DNA and try to match them to a crime. What the states do with the profile after not making a match is up to the individual states.
thanks for the info..