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.

Dec 1, 1992 · The templates described in this article employ a pseudo-graphics technique for rapidly generating either a blank three-level Levey-Jennings quality control (QC) chart or a blank two-level Westgard quality control chart on a single 8.5-by-11-inch sheet of paper.

Patricia L. Barry, co-author of Cost-Effective Quality Control: Managing the Quality and Productivity of Analytical Processes, provides a primer on how to construct, use, and interpret the Levey-Jennings chart.

some form of quality control. It’s best practice to have QC on every test in your lab, even the ones where “traditional quality control” is not an easy fit. In summary, quality control should include a set of procedures utilized in your laboratory that are suited to …

Jan 18, 2015 · One of the most common tools used to track laboratory quality control samples is the Levey-Jennings (L-J) chart. An L-J chart and the Westgard Rules are frequently used to verify trends, biases, or errors in quality controls.

Nov 18, 2017 · By plotting quality control results on a Levey-Jennings chart, shifts and trends in the quality control results can be quickly discovered. A shift occurs when the quality control results are all distributed on one side of the mean or the other for 5 to 7 consecutive days.

Quality control in the medical laboratory is a statistical process used to monitor and evaluate the analytical process that produces patient results. Regular testing of quality control products along with patient samples. Comparison of quality control results to specific statistical limits (ranges).

There is a requirement for good laboratory practice (GLP) in Internal Quality Control (IQC), according to the local authoritative body HOKLAS accreditation standard for Medical Testing and ISO 15189:2007 - Medical laboratories - Particular requirements for quality and competence.

Read this QC workbook to learn basic laboratory quality control statistics, Levey-Jennings (LJ) charts & statistical rules, comparative evaluations and background on crossover studies, and updated guidance.

Internal Quality Control •Internal quality control is a statistical process used to monitor and evaluate the analytical process that produces patient results •The question of reliability for most testing can be resolved by regular use of quality control materials and statistical process control