quality control

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qual·i·ty con·trol

the control of laboratory analytic error by monitoring analytical performance with control sera and maintaining error within established limits around the mean control values, most commonly ±2 SD.

quality control

a method of repeated assay of known standard materials and monitoring reaction parameters to ensure precision and accuracy.

quality control

EBM
In clinical trials, the constellation of operational techniques and activities undertaken within the trial’s quality assurance system to verify that the quality requirements of the trial related activities have been fulfilled.

quality control

Lab medicine The constellation of mechanisms used to determine accuracy, reliability and consistency of data, assays or tests, often in the context of a clinical lab. See Accredited lab, Multirule procedure. Cf Quality assurance, Total quality management.

qual·i·ty con·trol

(QC) (kwahl'i-tē kŏn-trōl')
Control of laboratory analytic error by the monitoring of analytic performance with control sera and maintenance of error within established limits around the mean control values, most commonly ±2 standard deviations.

quality control,

n standards and procedures used to ensure the proper identification and quality level of a product.

qual·i·ty con·trol

(QC) (kwahl'i-tē kŏn-trōl')
Control of laboratory analytic error by the monitoring of analytic performance with control sera and maintenance of error within established limits around the mean control values, most commonly ±2 standard deviations.
See also: quality assurance

quality

purity of contents, care in presentation and finish of a product.

quality assurance
planned and systematic action necessary to provide adequate confidence that a product or service will satisfy given requirements for quality. Quality is built into the product or service, rather than 'inspected in'.
quality control
the use of operational techniques, particularly end-product testing or inspection to ensure that a product or service satisfies its stated or implied role.
quality of life
generally regarded as the balance between pleasant and unpleasant factors and experiences as they apply to an animal's physical and mental state. A term used in discussions of euthanasia or intensive treatment.
protein quality
relates to the content and balance of amino acids in the protein. A good quality protein contains the amino acids in the correct proportions required by the specific animal species.
radiographic quality
depends on the correct positioning of the subject part, good contrast, clear image due to good detail and absence of artifacts.
References in periodicals archive ?
In addition, the comparisons of the quality-control methods are made based on ARLs, where the ARL is simply the number of quality-control batches tested (on average) before the quality-control method will signal.
These results are also important from the standpoint of the perceived error protection for the traditional quality-control approaches.
To further evaluate the performance of the [chi square] chart, the sensitivities to changes in precision for all the quality-control approaches are evaluated in Fig.
The existence of correlation between control concentrations in quality-control data is very real.
There is an inherent uneasiness with detecting shifts that occurred four or five quality-control batches ago and shutting down the system.
Given the potential for correlation in clinical quality-control data, it would be advisable for laboratories to check for correlation in their data.
Effect of analytical run length on quality-control (QC) performance and the QC planning process.
Because many point-of-care analyzers are more precise and accurate than whole-blood glucose meters, their manufacturers recommend extremely limited reference sample quality-control testing or, alternatively, daily electronic quality control.
Because of the high specificity of the follow-up rules, their violation should be followed by review of the laboratory records including the internal quality-control results.
2s] control rule appears to be the most common single quality-control rule used for analytical run rejection [31].
Twenty years after more-efficient quality-control practices were introduced to the laboratory, their application is still uneven.
Change to more-efficient, analyte-specific quality-control procedures will thus not arise de novo in a laboratory.

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