在任何法医学实验室的治理计划中,使用协作练习(CE)和能力测试(PT)已变得司空见惯,并得到了一些国际组织的推荐。传统上,这些都是针对特定学科的练习,在法医学的一个领域中测试实验室的能力。然而,“真实的世界”通常更复杂,在许多情况下,法医材料必须检查许多不同的证据类型。本文总结了这些概念,规划,设计,准备,实施,2022年多学科协作演习(2022-MdCE)的协调和评估,涵盖一系列法医学科,特别是DNA,指纹,文件和手写。练习包括一封带有打字稿文本和签名的质疑信。此外,这封信在签名区域有一个可见的血腥指纹,左下角可见的污点,潜在的指纹和缩进的印象。结果分析表明,在调查血迹时,DNA检查是优先考虑的.在指纹可视化之前应用时,出现了与生物(DNA)/墨水采样策略有关的一些关键问题。练习的另一个结果是证明了缩进印象的重要性,被大量参与者低估了。作为二传手,需要更深入的研究来产生一致的样本。这关系到所有有纪律的人,尤其是DNA和指纹。基于这个练习,人们认为,这种对法医学科进行测试的方法可以分析各个科学领域的良好实践,以及仔细检查事件的过程和顺序,以最好的保守方式在法医实验室内检查材料,以获取所有证据。
The use of collaborative exercises (CE) and proficiency tests (PT) as part of the governance programme for any forensic science laboratory has become commonplace and recommended by several international organisations. Traditionally these have been discipline-specific exercises testing a laboratory\'s ability in a single area of forensic science. However, the \"real\" world is normally more complex and, in many instances, forensic material must be examined for a number of different evidence types. This article summarises the concepts, planning, design, preparation, implementation, co-ordination and evaluation of the 2022 Multidisciplinary Collaborative Exercise (2022-MdCE) covering a range of forensic disciplines, specifically DNA, fingerprint, documents and handwriting. The exercise consisted of a questioned letter with typescript text and a signature. In addition, the letter contained a visible bloody fingermark in the area of the signature, a visible staining in the lower left-hand corner, a latent fingermark and an indented impression. The analysis of the results showed that, in the investigation of the bloody fingermark, the priority was given to the DNA examination. Some critical issues emerged in relation to the biological (DNA)/ink sampling strategies when applied before fingermark visualisation. Another outcome of the exercise has been to demonstrate the importance of indented impressions, which have been underestimated by a significant number of participants. As setters, more in-depth studies are needed to produce consistent samples. This concerns all the disciplined involved but especially DNA and
fingermarks. Based on this exercise, it is believed that this approach to testing of forensic disciplines allows the analysis of good practice within the various scientific areas, as well as scrutinising the process and sequence of events for examining the material within a forensic laboratory in the best conservative way for all kind of evidences.