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Comparing laboratory methods across years · RESEARCH-17946

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SourceIndex 00517
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Two results were collected years apart with unknown method changes. What should be clarified?

Question record — RESEARCH-17946
Field Scope
Subject Comparing laboratory methods across years
Exercise Discuss the stated question; distinguish sources, interpretations and unresolved points.


   
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FigureNotes 00518
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Ask whether assay, instrument, units or reference intervals changed and retain both original reports. Do not infer a physiological trend before assessing measurement comparability with a clinician.



   
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