Brand Name: VITROS Chemistry Products Product Name: VITROS Chemistry Products Performance Verifier II Model/Catalog Number: 8231474 Software Version: N/A Product Description: VITROS Chemistry Products Performance Verifier is an assayed control used to monitor performance on VITROS 250/350/5,1 FS/4600/XT 3400 Chemistry Systems and the VITROS 5600/XT 7600 Integrated Systems. VITROS Performance Verifier is prepared from processed human serum to which enzymes, electrolytes, stabilizers,mpreservatives and other organic analytes have been added. Component: No, not a component

Reason: Quality control (QC) drift when certain lots of Performance Verifiers (PVs) are used with certain lots of cholinesterase enzyme (CHE) slides. This drift occurs when the PVs are used 2-7 days after reconstitution; however, the label stability claims for the PV fluids is 7 days following reconstitution. This may lead to inaccurate QC results. The use of the PVs when the QC results are outside of the customer s established ranges could result in delayed results for patients due to the need to repeat QC testing or reconstitute new PV fluids and repeat testing. It could also result in erroneous patient results (small positive bias).

Code information: Lot Code: Product Code: 823 1474 (UDI: 10758750004577) Lots currently within expiry: W1667- Exp. 8/14/2025 X1901 - Exp. 11/20/2025 A2114 - Exp. 3/25/2026 D2338 - Exp. 6/3/2026 F2830 - Exp. 2/3/2027

Distribution pattern: Worldwide Distribution: US (nationwide) to states of: AZ, CA, FL, GA, IL, MD, MI, MO, MS, NY, TN, TX, VA; and OUS (International) to countries of: Australia, Brazil, Canada, Chile, China, Colombia, Denmark, France, Germany, India, Italy, Japan, Mexico, Netherlands, Norway, Portugal, Russia, Singapore, Spain, Sweden, and United Kingdom.