VITROS Immunodiagnostic Products Signal Reagent, Product Code 1072693, Unique Device Identifier No. 10758750008360 VITROS Immunodiagnostics Products Signal Reagent (SR) is supplied to users as a sales unit box containing two Signal Reagent Packs. Each Signal Reagent Pack is labeled with a barcode label. The label should include the name of the reagent, a barcode, lot information and expiry dating.