“A reference material that has one or more values certified by a technically valid procedure and is accompanied by, or is traceable to, a certificate or other document that is issued by a certifying body.” NBS (National Bureau of Standards) Calibrator: purified solution used to adjust electrical output of an instrument and should trace back to a CRM. Quality Control: Samples, Charts and Rulesĥ Definitions Certified reference material (CRM) The International Federation of Clinical Chemistry defines a control solution or control material as a "specimen or solution which is analysed solely for quality control purposes, not for calibration". 22s 6x 7t Quality Control: Samples, Charts and RulesĤ Definitions Control materials: Protein-based materials made or manufactured with a composition similar to patient samples that have or have not been analyzed for concentration so they have expected or no expected values. List which Westgard rules detect systematic versus random error. Analysis, Charts and Interpretation of Rules Quality Control: Samples, Charts and RulesĢ Learning Objectives Upon completion of this module you will be able to: Define: Control materials, Calibration materials, Levey-Jennings Chart, Westgard Single Rule and Multi-Rule Criteria, Systemic Error, & Random Error Describe a quality control sample in terms of assayed versus unassayed and their usesģ Learning Objectives Upon completion of this module you will be able to: Discuss the following Westgard rules: 13s 12s Apply the Westgard rules listed above to decide whether an analytic run is accepted or rejected.
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