The Levey–Jennings chart is a type of statistical process control (SPC) chart, typically used in laboratory quality control applications.
It uses the long-term (overall or population) estimate of sigma instead of the short-term (i.e., within subgroup or sample) estimate of sigma.

Material management plays a crucial role in clinical laboratory settings and in our daily lives. In a clinical laboratory, proper material management ensures that all necessary equipment and supplies are available, in good condition, and properly maintained to conduct accurate and reliable tests. This helps to ensure patient safety, improve the…[Read more]

controls are reference materials or samples used in clinical laboratories to monitor the accuracy and precision of laboratory test results. They are run alongside patient samples to ensure that the laboratory test is performing within acceptable limits.

Positive controls contain a known amount of the analyte of interest within the detectable…[Read more]

A standard in a clinical laboratory is a substance or material with a known concentration, purity, or activity that is used as a reference point for testing and calibration. It is a crucial element in quality control measures, ensuring the accuracy and reliability of laboratory test results. Standards are typically traceable to national or…[Read more]

Procedures provide detailed instructions for specific tasks, processes describe the overall workflow, and policies provide guidelines for decision-making and compliance with regulations.