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Sigma Metric Analysis
Evaluation of Two HbA1c POC Analyzers E-mail

As part of our continuing series of evaluations, we take a look at two point-of-care (POC) HbA1c analyzers. As standards on performance have tightened, have POC devices kept up? Has their improved performance matched the higher demands? 

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Second Evaluation of Arkray HbA1c E-mail

A chance to get a second look at instrument performance. In 2011, CCLM had a study of performance of the Menarini/ARKRAY ADAMS A1c HA-8180V analyzer. In 2012, Lab Med Online has another study, which gives us another opportunity to see if the first findings hold up.

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Cancer markers on the Vista E-mail

A 2011 study performed analysis on the performance of cancer markers on the Siemens Vista. We use the data and calculate Sigma-metrics. How good do cancer marker assays need to be? Are new methods meeting those goals?

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Indian Pilot Study in Sigma-metrics E-mail

 

In a 2011 study, an India hospital laboratory undertook a quality assessment of their clinical chemistry methods using Sigma-metrics. Is laboratory method quality the same the world over?

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Olympus AU2700 plus E-mail
In a 2010 study, the performance of an Olympus AU2700 plus was evaluated, using allowable maximum bias and imprecision values from the Ricos et al biologic variation database. Which got us to thinking, what would the metrics be if the Ricos specifications for allowable total error were used? For that matter, what if Rilibak or CLIA quality requirements were used?

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