Journal
CLINICA CHIMICA ACTA
Volume 333, Issue 2, Pages 131-139Publisher
ELSEVIER
DOI: 10.1016/S0009-8981(03)00177-3
Keywords
ISO 15189; accreditation; clinical outcomes; effectiveness; test selection; result interpretation
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Background: External reviews and the accreditation of medical laboratories involve more than the mere assessment of conformance with standards for organisational processes. The new approaches to quality improvement suggest that, rather than using inspection to correct unusual errors, there should be more emphasis on improving the processes of health care to ensure that desired outcomes are produced. Appropriateness plays a key role in programs for quality improvement. Methods: Appropriateness in laboratory medicine can be assessed, and improved, through the governance of the entire testing process. This begins with test selection, proceeds through valuable pre-, intra- and post-analytical procedures, and concludes by assuring the correct interpretation and utilization of laboratory information. Results: The International Standard, specifically developed for medical laboratories (ISO 15189) recognizes the value of appropriate interpretation and advisory services, although it does not specify requirements for assessing appropriateness, requesting tests and interpreting results. The effectiveness of clinical laboratories can be assessed by using surrogate markers, which indicate physicians' satisfaction, and clinical audits. Effectiveness is also enhanced by stressing the importance of the technical and professional competence of evaluators. Conclusions: Inappropriate laboratory utilization unjustifiably increases health care costs, can harm patients and perpetuates the vision of laboratory testing as a commodity. Improvement in laboratory appropriateness can be achieved by seeking a better relationship with physicians and by stressing the role of laboratory specialists in providing clinical advice for the selection of laboratory tests, and the interpretation and utilization of their results, thus leading to more satisfactory clinical outcomes. (C) 2003 Elsevier Science B.V. All rights reserved.
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