Levy Jenning Chart __full__ Site

The L-J chart serves as the visual map where these rules are applied. It allows lab personnel to distinguish between a simple statistical fluke and a genuine mechanical failure.

One control value exceeds ±3 SD, indicating a significant random error or outlier.

A typical Levy Jennings chart consists of: levy jenning chart

Even if no single point exceeds ±3s, the pattern of points can indicate trouble. Watch for these (commonly used with L-J charts):

The chart is built on the principles of a Gaussian distribution (bell curve) turned on its side. Its primary elements include: The L-J chart serves as the visual map

A Levy Jennings chart, also known as a Levey-Jennings chart or Westgard chart, is a graphical tool used in clinical chemistry and laboratory medicine to monitor and control the performance of laboratory tests. It is a type of control chart that helps laboratory professionals to detect any deviations or shifts in the measurement process, ensuring the accuracy and reliability of test results.

While the chart provides the visual data, Westgard Rules provide the logic for interpretation. These multirule procedures help labs decide if a test run should be accepted or rejected: A typical Levy Jennings chart consists of: Even

The Levy-Jennings chart isn’t just about passing inspections. It’s your early warning system. Catching a shift before it produces a falsely low troponin or falsely high potassium can directly save a life. When you respect the L-J chart, you protect every patient whose sample runs through your lab.