How to use levey-jennings quality control chart combined with westgard multi-rule quality control method for quantitative clinical immunoassay testing?

The application of Levey-Jennings quality control chart for clinical chemistry indoor quality control, the quality control measurements at the same time exceeded the face ten 1: or teeth one 1: control limit, 1 fly: ten has been familiar to the majority of clinical laboratory workers. However, because it only uses a single continuous quality control measurement value at the same time on the same side of the mean value (Xi.). Quality control rules, seems to be relatively crude. If based on the application of "Westgard 1.3 every day with the patient specimen determination of high value and low value of two copies of the quality control serum, measured multi-rule control method", then the probability of false loss of control and false alarms to reduce the error detection results were filled in the respective Levey a Jennings quality control charts. "Empty map", the root of the ability to enhance the loss of control, the loss of control of the type of analytical errors that lead to the loss of control have more according to the above rules to determine the results of the test batch in the control or out of control. The ability to recognize the out-of-control situation is also strengthened, which helps to take appropriate measures to correct the situation. Downstream analysis and correction. Face to blood glucose measurement as an example to illustrate the "westgard multi-rules control method" should be 2 results of a month GLU quality control (example).