血痕是DNA检验中最常见的检材,条件较好的血痕检材用常规的chelex-100法提取就能得到理想的检验结果。然而我们日常检案中所遇到的血痕检材往往有腐败、降解、污染等问题存在,这时我们就要优化我们的提取方法,以达到理想的检验结果。本文所报道的这例血痕检材来自于一起发生在 Bloodstains are the most common samples in DNA test. The better blood test samples can be extracted by the conventional chelex-100 method to obtain the ideal test result. However, the bloodstains encountered in our routine prosecution cases often have problems of corruption, degradation and pollution. At this moment, we must optimize our extraction methods so as to achieve the desired test results. The bloodstains reported in this article come from together