PT/INR Liquid Quality Control Kit for the use with any Xprecia™ Coagulation Analyzer. The Xprecia™ Systems PT Controls kit contains assayed controls for the assessment of precision and accuracy in the normal (Liquid Quality Control PT1) and therapeutic (Liquid Quality Control PT2) range for the prothrombin time (PT). They must be used with the corresponding Xprecia™ PT/INR Strips for the analyzer.