Levey-Jennings QC chart is a statistical tool used in laboratory testing to monitor the precision and accuracy of a measurement system over time. It plots the mean and standard deviation of a series of quality control measurements against time, allowing users to detect shifts or trends in the data that may indicate errors or variability in the measurement process.

Levey-Jenning chart – YouTube

https://youtu.be/v3lVQGT1–o

This video introduces the Levey-Jenning chart – its concept, creation, interpretation and usage.