… of this cholesterol example cannot be over-emphasized because it … controls and samples
used for external quality assessment. … materials with the difference in bias approach: are …

… cost of suitable quality control material and the matrix effects of … with wider fluctuation
because of dietary (cholesterol), … tools for QC strategies to detect biases. The simulation …

… detailed quality procedures designed to minimise drift, bias and … We also followed a rigorous
internal quality control (QC) … In contrast, HDL-cholesterol and lipoprotein (a) had consistent …

… , assuming correct use of statistical techniques and methods to … bias approach in the
evaluation of EQA samples for measurements of HDL and LDL cholesterol was further investigated …

… EQA programs, ie, cholesterol, where deviations to the target … to a method (that obviates
the possible matrix effect of a … such as evaluation of method and participant bias and standard …

… In this study, the acceptable performance limits of TE, CV and bias from the National Cholesterol
… The external quality control of the ultracentrifugation method was assured by reference …

… rate of cholesterol metabolism to bile acids could lead to an … using the NHLBI Study Quality
Assessment Tool and the … for their sample size would lead to an underestimating bias. …

… formula in their study but in general smaller biases were … external validation of the findings
of our study using samples … -C measurement methods applied in laboratories is needed. …

… between-batch reproducibility in quality control samples, in … example the analyses of total
cholesterol and triglycerides, is … When we compared the bias of lipid concentrations to the NIST-…

… 2 had a positive bias on both the cholesterol and HDL-C, but … DCA and consumables including
internal quality control (QC) … , accuracy was assessed by method comparison with central …