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It's no revelation to say that there is a lack of clear and specific directions about quality control in government and literature. In up to 30% of laboratories, this has led to ill-defined QC practice. This QC application provides more specific directions on how to select appropriate "QC acceptability criteria" and a Total QC strategy that will satisfy CLIA requirements.
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Written by James O. Westgard. Ph.D.
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In the March 2002 issue of Clin Chem, the NACB published a 36 page report about the use of laboratory tests for patients with diabetes. It's probably the longest paper ever published by Clin Chem. Dr. Westgard examined the "evidence-based" recommendations, though, and found some poor Sigma values. Here, using Validator software, Dr. Westgard demonstrates how to set useful method specifications for GHb.
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Written by Sten Westgard, MS
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To study the usefulness of the calculations from The Quality of Laboratory Testing series, we took a look at one proficiency testing program, the New York State Wadsworth program. Rather than look at a single event, we looked at all the events for two years.
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QC Applications 