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13 Cards in this Set
- Front
- Back
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quality control
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the performance of tests so the results are accurate and reliably reproducible
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mode
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the value that occurs most frequently in a set of values
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median
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the value representing the center of a set of values
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mean
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the sum of all values divided by the number of values (average)
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accuracy
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the extent to which measurements agree with the true value of what is being measured
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quality control (alt. def)
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process of monitoring instruments, reagents, test procedures, technician performance, and accuracy of reported results
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controls
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solutions with known properties that are analyzed for QC purposes only
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precision
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obtaining the same results repeatedly on the same sample
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standard deviation
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a statistical index of the degree of deviation from a central tendency, the variability within a distribution
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reference ranges
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a range of values derived when a lab runs samples from a number of clinically "normal" animals
varies from machine to machine |
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pre-analytical QC procedures
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patient prepared properly
sample and sample handling proper ID of sample |
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analytical QC procedures
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calibration
standardization monitoring equipment while in use |
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other QC concerns
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all things are in-date
timing devices checked temperature devices checked |
