The firm has identified that the Transferrin reagent does not meet the Instructions for Use (IFU) reagent on-board stability claims, which may cause control failures and/or erroneous patient samples results. The Complaint handling unit has received a total of 2 safety cases (CASE-2023-02027212 and CASE-2023-02045278) and 99 quality cases with the failure mode attributed to Transferrin reagent (OSR6152 / lot 2573) associated with reagent blank shifts for the Reagent 2 (R2), imprecision, calibration failures, erratic Quality Control (QC) recoveries, and/or erroneous high/low (serum, plasma, urine) patient results. The issue was confirmed through internal testing by Beckman Coulter on June 30, 2023. Reagent Blank shifts for R2, imprecision, calibration failures, erratic Quality Control (QC) recoveries, and/or erroneous high/low (serum, plasma, urine) patient results. The issue was confirmed through internal testing by Beckman Coulter on June 30, 2023.