What is the primary purpose of a Levy-Jennings chart?

The primary purpose of a Levy-Jennings chart is to plot control samples results over time. This type of chart is instrumental in quality control within laboratory environments, enabling technicians and managers to monitor the performance of laboratory tests. By displaying quality control data in a visual format, it allows for easy identification of trends, shifts, and any potential issues with test processes.

The chart typically shows control sample results against predetermined control limits, which helps in assessing the consistency and reliability of test results over time. This method of visualizing data supports the laboratory in maintaining the accuracy of test results, ultimately contributing to better patient care. The Levy-Jennings chart does not focus on staff performance, summarize patient data, or simply visualize the mean of test results; rather, it is specifically designed to track the performance of control samples, making it a vital tool for quality assurance.