quality assurance 0.0 / 5 ? Chemistryquality assuranceUniversityAll boards Created by: LouCreated on: 30-04-17 13:34 what describes 'quality control'? everything the lab does to assure a high quality service to its users 1 of 10 what describes 'internal quality control' ? each day labs analyse materials with known concentrations of specific substances to ensure, in real time, reliable results 2 of 10 what describes 'external quality control'? independent, objective data on individual labs and test method performance 3 of 10 what describes 'analytical sensitivity' ? smallest amount of analyte a method can distinguish from zero with 95% confidence 4 of 10 what describes 'analytical specificity' ? the ability of the assay to discriminate an analyte from a potentially interfering analyte 5 of 10 what describes 'systematic bias'? bias resulting from the system, leading to systematic errors, in contrast to random errors 6 of 10 what describes 'systematic error (drift)'? bias in measurement that lead to measured values being systematically too high/ low. 7 of 10 what describes 'linearity' ? the ability of an analytical procedure to obtain test results that are directly proportional to the concentration of analyte 8 of 10 what describes 'clinical audit' ? a quality improvement process that seeks to improve patient care and outcomes via systematic reviews against explicit criteria 9 of 10 how are reference ranges calculated? the average value of the group plus or minus 2 standard deviations of the average 10 of 10
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