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Table 3 INR formulation

From: Effects of oral anticoagulation with various INR levels in deep vein thrombosis cases

• INR: prothrombin time rateISI

 

• Example = found in patient

PT: 17.9 second

normal

PT: 12.2 second

 

ISI: 2.3

• INR: (17.9 / 12.2)2.3 = 2.4

 
  1. • INR: International normalized ratio; PT: Prothrombin time; ISI: International Sensitivity Index.
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ISSN: 1745-6215