Abstract
International normalized ratio (INR) derivation is dependent on the international sensitivity index (ISI) of thromboplastin. It varies with instrument and reagents used. To evaluate the role of a correction factor in the derivation of INR. We studied prothrombin time (PT) and INR from patients using 3 thromboplastins of varying ISI values. The correction factor was applied to the observed INR to obtain a corrected INR. The difference between corrected INR and observed INR values varies from -0.8 through 0.96. Corrected INR is dependent on PT only. It can be applied to all patients irrespective of cause for elevated PT.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
