Somnay Vishal, Duong Thomas, Tsao Ray-Young, Prahlow Joseph A
Acad Forensic Pathol. 2020 Mar;10(1):56-61. doi: 10.1177/1925362120944743. Epub 2020 Sep 14.
Forensic DNA testing can play a critical role in homicide investigations. Selecting the appropriate evidence on which to perform DNA testing requires foresight and reasoning based on experience and science. Although successful DNA testing can occur using many substrates, including blood, hair, and sweat/epithelial cells, positive results can also result from testing various unorthodox samples. The authors report on a triple-murder investigation where DNA testing of dog feces at the crime scene matched DNA testing of feces found on the shoe of a suspect resulting in successful prosecution of the case.
法医DNA检测在凶杀案调查中可发挥关键作用。选择合适的证据进行DNA检测需要基于经验和科学的远见与推理。尽管使用包括血液、毛发和汗液/上皮细胞在内的多种底物都能成功进行DNA检测，但检测各种非传统样本也可能得到阳性结果。作者报告了一起三重谋杀案的调查，在该案件中，对犯罪现场狗粪的DNA检测与在一名嫌疑人鞋子上发现的粪便的DNA检测相匹配，从而成功起诉了该案件。
