Why do I need to submit standards from my suspect(s) and victim(s)? Missouri

[qacrawler]

It is incumbent upon the DNA section to make every reasonable effort to associate biological stains with the individuals who may have imparted the stain. Due to the sensitivity of current DNA procedures, it is not uncommon to find mixtures of DNA on an item. An example of this would be finding the suspect’s blood on the victim’s clothes. Simply being the wearer of the clothing, the victim may impart their own DNA on the garment, thus causing a mixture with the suspects DNA. If we only had the suspects standard to compare to the stain, there would always be a question as to who else’s DNA is present unless we had a standard from the victim as well.