CLINICAL CHEMISTRY AND LABORATORY MEDICINE, cilt.44, sa.4, ss.387-390, 2006 (SCI-Expanded)
Background: In clinical laboratories, many test results such as low-density lipoproteins can be calculated using the results of specifically measured tests. However, quality control programs deal with only measured tests and there is no quality control procedure for calculated tests. I aimed to modify the Levey-Jennings chart for calculated tests as part of a total quality system.