VITROS Immunodiagnostic Products CK-MB Calibrators, REF 128 6293, IVD, Ortho-Clinical Diagnostics High Wycombe HP12 4DP, UK For use in the calibration of the VITROS ECi/ECiQ Immunodiagnostic Systems, the VITROS 3600 Immunodiagnostic System and the VITROS 5600 Integrated System for the quantitative measurement of CK-MB in human serum and plasma (EDTA or heparin).

Internal testing demonstrated that opened-reconstituted VITROS CK-MB Calibrators stored at -20 degrees Celsius (-4 degrees Farenheit) generated invalid calibrations that were detected by positively biased quality control results.

Ortho Clinical Diagnostic sent a " Important Product Correction Notification" letter dated April 3, 2013, to all affected customers. The letter identified the product the problem and the action needed to be taken by the customer. The customers were informed of the issue and advised they must discontinue storage of opened-reconstituted vials of VITROS CK-MB Calibrators frozen at -20 degrees Celsius (-4 degrees Farenheit). The same day, the Distributor letters were sent via US Postal Service Priority Mail or FedEx overnight courier to US Distributor consignees who were informed of the issue and instructed to notify their customers of the issue and actions. Also on April 3, 2013, the foreign affiliates were informed of the issue by e-mail and instructed to notify their consignees of the issue and actions. Confirmation of Receipt - Important Response Required so that we can complete our records, please return this form to us no later than April 19, 2013. FAX: 1-888-557-3759 or 1-585-453-4110 We apologize for any inconvenience this may have caused your laboratory. If you have any additional questions, please call Customer Technical Services at 1-800-421-3311.