VITROS Chemistry Products PHYT Slides, REF/CATALOG 829 8671, Rx ONLY, IVD; Ortho-Clinical Diagnostics, Inc. For in vitro diagnostic use only. VITROS Chemistry Products PHYT Slides quantitatively measure phenytoin (PHYT) concentration in serum and plasma using VITROS 250/350/950/5,1 FS and 4600 Chemistry Systems and the VITROS 5600 Integrated System.

Reason: The firm identified the potential for biased results to be generated when processing VITROS PHYT Slide product with citrate plasma specimen samples. The current Instructions for Use (IFU) and Assay Summary Chart state serum, heparin plasma, and citrate plasma as acceptable specimen types for use with the PHYT assay.

Code information: Unique Identifier Number ( UDI) 10758750004690; This issue affects expired, current (in date) and future product GENs.

Distribution pattern: Worldwide Distribution - US Distribution including Puerto Rico and the following countries: Bermuda, Australia, Brazil, Canada, Chile, China, Colombia, England, France, Germany, India, Italy, Japan, Mexico, Republic of Panama, Poland, Singapore, Spain, Russia and Venezuela.