mminhas44 11 Posted September 11, 2018 Share Posted September 11, 2018 Hi, Is it OK if the LJ chart graph lies on mean consistently (ie without fluctuations) ? Regards Link to post Share on other sites
SMILLER 870 Posted September 12, 2018 Share Posted September 12, 2018 It sounds like your SD is set too low. Try recalculating it based on recent results. Scott mminhas44 1 Link to post Share on other sites
Alan Neal 16 Posted September 14, 2018 Share Posted September 14, 2018 Agree - highly probably that the SD being used is not appropriate i.e. to large. Results should be distributed across the L-J chart, with approx. 1:20 results in the 2-3 SD space. Suggest review local and published SD for analytes mminhas44 1 Link to post Share on other sites
milesd3 5 Posted September 18, 2018 Share Posted September 18, 2018 Are you saying that a specific parameter is consistently the same exact value each and every time QC is performed and for all three levels? That would be amazing. There are a couple non reportable items on our analyzer that stay pretty consistent but they are items that have to do with the operation of the instrument such as diff X and Diff Y. none of our reportable parameters are steadily the same number each time... SMILLER 1 Link to post Share on other sites
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