- It is planned or systematic actions necessary to provide enough confidence that a product or service will satisfy the given requirements for quality.
- It was developed out of the limitations of the QC approach and defined quality in health acre institutions by the success of the total organization in achieving goals of patient care.
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Control of Tests
Precision
- It can be assessed intra-laboratory and inter-laboratory. It is determined by how well a procedure reproduces a value.
Accuracy
- commonly known as the "gold standard" it refers to the closeness of a result to the actual value of an analyte when performing a test.
Sensitivity
- is the percentage of individuals with particular disease for which the test is used in whom positive results are found.
Specificity
- is the percentage of individuals who do not have the particular disease and whom negative results are found.
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