iSTAT PT/INR on Stroke Patients

Linda and Roxanne are correct.  The issue is the intended use of the instrument and test.  "The i-STAT® PT/INR test is a whole blood determination of the prothrombin time used for monitoring oral anticoagulant (Coumadin or warfarin) therapy."-this is from the Abbott product insert. 715236-00S.pdf (globalpointofcare.abbott)  That is from the FDA and what the FDA has cleared the device and test for.  It can't be used for screening, which would be for stroke patients.  Emergency room providers see it as a fast way to get a PT/INR, when the STAT turnaround time from the Lab should be able to provide both PT/INR and aPTT in lest than 20 minutes.  Radiology and Stroke Protocols | vRad Turnaround Times