What should be done if there is a shift in QC results?/ Why has there been a shift in results in my QC testing?/ Why is there variation between lots for QC testing?

What should be done if there is a shift in QC results?/ Why has there been a shift in results in my QC testing?/ Why is there variation between lots for QC testing?

  1. Please refer to the operator's manual and re-run the test for that specific control.
  2. Possible sources for a shift in results include:
    1. Analyzer is near a source of inconsistent heat/cold (fans, vents, sunny windows). 
    2. Invalid amount of sample has been loaded into a Cartridge.
    3. Possible contamination of control fluid.