The usefulness of an analytical system in patient care is ultimately judged not by its
analytical performance but by its clinical performance, ie, its ability to separate apparently …

The real value of the budget available for clinical chemistry in this country is unlikely to
increase for some years. Any expansion and development must therefore be balanced by …

We describe an array of checking routines that can aid laboratory staff in detecting possible
errors in results being entered into a laboratory computer. A single lresut is checked at the …

Different quality control rules detect different analytical errors with varying levels of efficiency
depending on the type of error present, its prevalence and the number of observations. The …

We developed of computer programs to evaluate the clinical reliability of test results by
comparing each new result with previous results for the same patient, and to signal …

Abstract Taking the National Clinical Chemistry Quality Control of China National Center for
Clinical Laboratory as an example, I present this study of some problems with using the …

Experimental and simple theoretical results for noise In cur-rent-carrying electrochemical
detectors are presented and compared. The theory Is based on the simple parallel RC …

A modified statistical method for the detection of outlying values has been applied to five
fortnightly sets of data from the National Quality Control Scheme. The overall outlier rate was …

Implementation of comprehensive internal quality control programmes and participation in
external quality assessment schemes to monitor analytical performance of laboratory tests …