The introduction of evaluating measurement uncertainty with top-down approach

doi:10.3969/j.issn.1673-8640.2014.01.020

Abstract

Abstract: The measurement of uncertainty is an important parameter which ensures the integrity of measurement results. Top-down approach is a prior choice to evaluate uncertainty in medical laboratories with imprecision and bias. Since 1995, when top-down approach was firstly introduced, the evaluation objects and calculating Methods have been developed and improved continuously. At present, imprecision can be determined by replicate measurements and internal quality control data, while bias can be assessed by certified reference materials, reference methods, recovery tests and external quality assessment data. The Methods of evaluating measurement uncertainty will be focused according to different objects in this review.

Key words: Uncertainty measurement, Bias, Imprecision, Internal quality control, External quality assessment

CLC Number:

R446.1

CHEN Longmei, WANG Huimin, JU Yi.. The introduction of evaluating measurement uncertainty with top-down approach[J]. , 2014, 29(1): 81-85.

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