Houston Forensic Science Center, Houston, TX 77002.
Proc Natl Acad Sci U S A. 2023 Oct 10;120(41):e2303592120. doi: 10.1073/pnas.2303592120. Epub 2023 Oct 2.
Houston TX experienced a widely known failure of its police forensic laboratory. This gave rise to the Houston Forensic Science Center (HFSC) as a separate entity to provide forensic services to the City of Houston. HFSC is a very large forensic laboratory and has made significant progress at remediating the past failures and improving public trust in forensic testing. HFSC has a large and robust blind testing program, which has provided many insights into the challenges forensic laboratories face. HFSC's journey from a notoriously failed lab to a model also gives perspective to the resource challenges faced by all labs in the country. Challenges for labs include the pervasive reality of poor-quality evidence. Also that forensic laboratories are necessarily part of a much wider system of interdependent functions in criminal justice making blind testing something in which all parts have a role. This interconnectedness also highlights the need for an array of oversight and regulatory frameworks to function properly. The major essential databases in forensics need to be a part of blind testing programs and work is needed to ensure that the results from these databases are indeed producing correct results and those results are being correctly used. Last, laboratory reports of "inconclusive" results are a significant challenge for laboratories and the system to better understand when these results are appropriate, necessary and most importantly correctly used by the rest of the system.
美国得克萨斯州休斯顿市警察局法医实验室曾发生一起广为人知的重大失误,由此成立了休斯顿法医科学中心(HFSC),作为一个独立实体为休斯顿市提供法医服务。HFSC 是一个规模庞大的法医实验室,在纠正过去的失误和提高公众对法医检测的信任方面取得了重大进展。HFSC 有一个庞大而健全的盲测计划,为法医实验室面临的挑战提供了许多深入的了解。HFSC 从一个声名狼藉的失败实验室到成为模范的历程,也让人们了解到全国所有实验室所面临的资源挑战。实验室面临的挑战包括普遍存在的证据质量差的现实,以及法医实验室必然是刑事司法中相互依存的功能更广泛系统的一部分,这使得盲测成为所有环节都必须发挥作用的事情。这种相互联系也凸显了需要一系列监督和监管框架才能正常运作。法医领域的主要基本数据库需要成为盲测计划的一部分,需要开展工作以确保这些数据库的结果确实能产生正确的结果,并且这些结果能被正确使用。最后,实验室报告的“不确定”结果对实验室和整个系统来说都是一个重大挑战,需要更好地了解何时这些结果是适当的、必要的,最重要的是被系统的其他部分正确使用。