在强奸案的物证检验工作中，常遇到案犯已作过输精管结扎术的案例，且案犯常以此为理由否认物证检验结果。对这类案件的精液斑检验有无特殊处理，以下述案件为例进行分析和研究。实例1996年10月15日凌晨5时，在深圳市宝安区岗村某制品厂一宿舍里，该厂女工吴某（20岁，湖北人） Cases of ransacks in the physical evidence testing, often encountered by criminals have been vasectomy cases, and criminals often use this as a reason to deny the physical evidence test results. There is no special treatment of semen plaque in such cases, the following cases as an example for analysis and research. Example At 10 a.m. on October 15, 1996, at a dorm in a factory in Gang Village, Bao’an District, Shenzhen, the factory worker Wu (20, Hubei)