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Laboratory quality control, the Glossary

Index Laboratory quality control

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.[1]

Table of Contents

  1. 28 relations: Automated analyser, Check sheet, Control chart, Detection limit, External quality assessment, Flowchart, Freeze drying, Hematology analyzer, Histogram, Laboratory quality control, Medical test, Observational error, Pareto chart, Pathology, Pipette, Precision (statistics), Quality assurance, Quality control, Reagent, Scatter plot, Sensitivity and specificity, Seven basic tools of quality, Shewhart individuals control chart, Statistical population, Turbidity, Validation and verification (medical devices), Viscosity, Westgard rules.

  2. Laboratories
  3. Statistical process control

Automated analyser

An automated analyser is a medical laboratory instrument designed to measure various substances and other characteristics in a number of biological samples quickly, with minimal human assistance.

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Check sheet

The check sheet is a form (document) used to collect data in real time at the location where the data is generated.

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Control chart

Control charts are graphical plots used in production control to determine whether quality and manufacturing processes are being controlled under stable conditions.

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Detection limit

The limit of detection (LOD or LoD) is the lowest signal, or the lowest corresponding quantity to be determined (or extracted) from the signal, that can be observed with a sufficient degree of confidence or statistical significance.

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External quality assessment

External quality assessment (EQA), or external quality assessment schemes(EQAS) is a challenge of the effectiveness of a laboratory's quality management system, typically referring specifically to medical laboratories.

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Flowchart

A flowchart is a type of diagram that represents a workflow or process.

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Freeze drying

Freeze drying, also known as lyophilization or cryodesiccation, is a low temperature dehydration process that involves freezing the product and lowering pressure, thereby removing the ice by sublimation.

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Hematology analyzer

Hematology analyzers (also spelled haematology analysers in British English) are used to count and identify blood cells at high speed with accuracy.

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Histogram

A histogram is a visual representation of the distribution of quantitative data.

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Laboratory quality control

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. Laboratory quality control and laboratory quality control are laboratories, quality control and statistical process control.

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Medical test

A medical test is a medical procedure performed to detect, diagnose, or monitor diseases, disease processes, susceptibility, or to determine a course of treatment.

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Observational error

Observational error (or measurement error) is the difference between a measured value of a quantity and its unknown true value.

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Pareto chart

A Pareto chart is a type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line.

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Pathology

Pathology is the study of disease and injury.

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Pipette

A pipette (sometimes spelled as pipet) is a type of laboratory tool commonly used in chemistry and biology to transport a measured volume of liquid, often as a media dispenser.

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Precision (statistics)

In statistics, the precision matrix or concentration matrix is the matrix inverse of the covariance matrix or dispersion matrix, P.

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Quality assurance

Quality assurance (QA) is the term used in both manufacturing and service industries to describe the systematic efforts taken to assure that the product(s) delivered to customer(s) meet with the contractual and other agreed upon performance, design, reliability, and maintainability expectations of that customer.

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Quality control

Quality control (QC) is a process by which entities review the quality of all factors involved in production.

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Reagent

In chemistry, a reagent or analytical reagent is a substance or compound added to a system to cause a chemical reaction, or test if one occurs.

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Scatter plot

A scatter plot, also called a scatterplot, scatter graph, scatter chart, scattergram, or scatter diagram, is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data.

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Sensitivity and specificity

In medicine and statistics, sensitivity and specificity mathematically describe the accuracy of a test that reports the presence or absence of a medical condition.

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The seven basic tools of quality are a fixed set of visual exercises identified as being most helpful in troubleshooting issues related to quality.

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Shewhart individuals control chart

In statistical quality control, the individual/moving-range chart is a type of control chart used to monitor variables data from a business or industrial process for which it is impractical to use rational subgroups.

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Statistical population

In statistics, a population is a set of similar items or events which is of interest for some question or experiment.

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Turbidity

Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air.

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Validation and verification (medical devices)

Validation and verification are procedures that ensure that medical devices fulfil their intended purpose.

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Viscosity

The viscosity of a fluid is a measure of its resistance to deformation at a given rate.

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Westgard rules

The Westgard rules are a set of statistical patterns, each being unlikely to occur by random variability, thereby raising a suspicion of faulty accuracy or precision of the measurement system. Laboratory quality control and Westgard rules are quality control.

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See also

Laboratories

Statistical process control

References

[1] https://en.wikipedia.org/wiki/Laboratory_quality_control

Also known as Analytical specificity, Levey-Jennings chart, Levy-Jennings chart, Levy-Jennings graph, Levy-Jennings plot.