Dimension Ammonia Flex reagent cartridge / AMM Dimension: The AMM method is an in vitro diagnostic test for the quantitative measurement of ammonia in human plasma on the Dimension clinical chemistry system. Ammonia measurements are used in the diagnosis and treatment of severe liver disorders such as cirrhosis, hepatitis and Reye s syndrome

Siemens sent an Urgent Field Safety Notice on December 20, 2016, to all customers who were affected by the issue. The letter identified the reason for the correction, the associated risks to health, and actions to be taken by the customer. Customers were instructed to discontinue use of and discard the affected lots, complete and return the Field Correction Effectiveness Check Form attached to the letter. Customers with questions were instructed to contact their Siemens Customer Care Center or their local Siemens technical support representative. For questions regarding this recall call 800441-9250.