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Laboratory quality control is designed to detect, reduce, and correct deficiencies in a laboratory's internal analytical process prior to the release of patient results, in order to improve the quality of the results reported by the laboratory. Quality control (QC) is a measure of precision, or how well the measurement system reproduces the ...
Kaoru Ishikawa identified five uses for check sheets in quality control: [3]: 30 To check the shape of the probability distribution of a process; To quantify defects by type; To quantify defects by location; To quantify defects by cause (machine, worker) To keep track of the completion of steps in a multistep procedure (in other words, as a ...
Quality control begins with sample collection and ends with the reporting of data. [4] AQC is achieved through laboratory control of analytical performance. Initial control of the complete system can be achieved through specification of laboratory services, instrumentation, glassware, reagents, solvents, and gases.
The Individualized Quality Control Plan (IQCP) is a quality management system under the US Clinical Laboratory Improvement Amendments (CLIA) federal regulatory standards. It is designed to enable regulated medical laboratories to manage the frequency of their quality control .
The Principles of Good Laboratory Practice (GLP) establish rules and criteria for a quality system that oversees the organizational processes and conditions in which non-clinical health and environmental safety studies are planned, conducted, monitored, recorded, reported, and archived.
The resulting plots are analyzed as for other control charts, using the rules that are deemed appropriate for the process and the desired level of control. At the least, any points above either upper control limits or below the lower control limit are marked and considered a signal of changes in the underlying process that are worth further ...
They are a set of modified Western Electric rules, developed by James Westgard and provided in his books and seminars on quality control. [1] They are plotted on Levey–Jennings charts , wherein the X-axis shows each individual sample, and the Y-axis shows how much each one differs from the mean in terms of standard deviation (SD).
ISO 15189 Medical laboratories — Requirements for quality and competence is an international standard that specifies the quality management system requirements particular to medical laboratories. The standard was developed by the International Organisation for Standardization 's Technical Committee 212 (ISO/TC 212).