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The final installment of an extended discussion of HbA1c methods and the analytical quality necessary for patient care. While we may have found problems with many HbA1c methods at the point of care, are methods any better in the central laboratory?
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In 2009, US laboratories were reporting surges in the number of vitamin D tests being ordered - increases of 50% to even 100%. But beyond the growth in testing and usage, what's the quality required by this type of testing?
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Written by James O. Westgard, PhD, FACB
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In the March 2002 issue of Clin Chem, the NACB published a long paper about the use of laboratory tests for patients with diabetes. Dr. Westgard examines their "evidence-based" recommendations, and finds some poor Sigma values. (Preview)
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Written by James O. Westgard, PhD, FACB
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In 2003, the premier scientific journals announced a new initiative called STARD (Standards for Reporting Diagnostic Accuracy) What does STARD mean for you? And what does it say about the data being reported in journals today? Dr. Westgard investigates. (Preview)
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Written by James O. Westgard, PhD, FACB
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As we look at the quality of laboratory medicine, we need a demanding standard for judging the truth. See how some new tests (hs-CRP) and new recommendations (diabetes) fare when they're held up to the "the truth, the whole truth, and nothing but the truth" standard. (Preview)
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