ANSI/IICRC S540标准定义了技术人员用于检查和调查血液和其他潜在传染性物质（OPIM）污染以及制定工作计划和程序的标准和方法。该标准描述了专业人员在进行创伤和犯罪现场清理时应遵循的程序以及应采取的预防措施，无论其表面、物品或位置如何。本标准假设所有场景均已由执法或监管机构发布。

ANSI/IICRC S540 Standard defines criteria and methodology used by the technician for inspecting and investigating blood and other potentially infectious material (OPIM) contamination and for establishing work plans and procedures. The Standard describes the procedures to be followed by professionals and the precautions to be taken when performing trauma and crime scene cleanup regardless of surface, item, or location. This standard assumes that all scenes have been released by law enforcement or regulatory agencies.