Atellica CH 930 Analyzer, Siemens Material Number 11067000 with software version v1.21.0 SP1 or lower
Editing an assay Test Definition and switching to another assay s Test Definition screen without saving the changes using the save button on the screen, may corrupt the settings of the assay s test definition, and Auto-Rerun or Auto-Dilution results may generate a result of Zero (0) for quantitative assays or Negative for qualitative assays if a well of the reagent pack is not calibrated.
US Nationwide. Global distribution.
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=Z-1797-2020