Levy Jenning Chart Jun 2026

Ten consecutive points fall on the same side of the mean, indicating a shift in the process. Why It Matters

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The "interesting feature" of the Levy-Jennings chart is its ability to . It transforms the abstract concept of standard deviation into a clear, color-coded map, allowing laboratories to trust their patient results by instantly spotting when an instrument goes "out of control." Ten consecutive points fall on the same side

The primary purpose of the Levy-Jennings chart is to monitor the performance of analytical instruments (like those used in chemistry or hematology) to ensure they remain accurate and precise. It provides a visual history of a "Control" sample—a substance with a known value—analyzed over time. It transforms the abstract concept of standard deviation