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Logo of bmjThis ArticleThe BMJ
BMJ. 2007 May 5; 334(7600): 928.
PMCID: PMC1865464
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INR easily monitored at home

A portable coagulometer (CoaguChek XS, Roche Diagnostics Australia), which measures blood international normalised ratio (INR) on a fingerprick sample proved accurate and easy to use. Tasmanian patients received two training sessions and then had near synchronous tests performed with the device and by a standard laboratory method. Paired results were highly correlated (r = 0.91) and only three (5%) of the home tests differed from laboratory results by >20% or were discrepant by >0.5 INR units. Further tests are needed to evaluate its accuracy outside standard INR target ranges.


  • J Clin Path 2006;60:311-4, doi: 10.1136/jcp.2006.03782010.1136/jcp.2006.037820

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