Tools, Technologies and Training for Healthcare Laboratories

Sigma Metric Analysis

Evaluation of a Chinese Automated Chemistry Analyzer

A 2013 study from the Journal of Laboratory Medicine and Quality Assurance evaluated the performance of a Chinese manufactured automated chemistry analyzer running Korean reagent. The study produced a lot of r-values in the 0.99 range. Does this mean the analyzer-reagent combination is better than the west?

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Sigma-metrics of Six HbA1c methods

The August 2014 issue of the Journal of Clniical Chemistry had not one, but two different articles assessing the quality of different HbA1c methods. In addition to the Lenters-Westra and Slingerland, Woodworth et al performend a Sigma-metric analysis - this time "patient-weighted" - of their own. Do the metrics agree?

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Evaluation of 3 Glucose monitoring systems

With all the controversy raging over the FDA Draft Guidelines for new glucose meters, let's remind ourselves of the performance that we see currently on the market. In this example, we'll evaluate three different glucose monitoring systems and see if they meet today's goals and possibly tomorrow's tighter goals...

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Evaluation of 4 POC instruments

An analysis of 4 different point-of-care (POC) analyzers and one POC device for HbA1c, based on a study published in 2012. The focus of the study was to find practical POC devices that could support faster decision making for the country's large HIV population. The question is, do any POC devices provide adequate quality for that type of clinical care?

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