Discreet DNA samples anywhere from toothpicks to tampons are being tested at the Elk Grove genetic testing company, easyDNA. Blood stain from a tampon or bandage? You can send it in for ancestry, paternity, or health testing. If this seems like an invitation for trouble it might be one. Imagine a potential employee not getting a job because a used tissue was tested positive for chance of an expensive disease. Although there are beneficial uses for this kind of technology the cons may outweigh the pros.