Evaluation tools

Levey Jennings plots track the accuracy and precision of the analyser over time. QC results are displayed graphically and compared to the assigned values, with an option to compare QC values before and after a change of QC lot.



Westgard rules are a set of statistical rules that can increase the probability of detecting an error in the sampling procedure or in the analyser itself. Westgard rules also help detect a shift or trend in quality control results by comparing current measurement values of a control solution with previous values.

RiliBÄK rules define a set of rules to control the maximum deviation of any parameter from the assigned target value. This statistical tool fulfills the requirements of the German Medical Association.