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Deleted member 39678
Guest
Never know if someone in the residence already has a DNA profile somewhere.. Military? some sort of legal issues? If they had DNA from the crime scene maybe could see if could get a hit (thinking out loud but yes think they would need a reference) But I not discounting them getting DNA from trash... jmho
I could have a fast food workers DNA on my trash or the checker from the grocery store. My trash may have someone else's DNA. The only way to tell if it's not mine is to get a known sample from me and not my trash.