prothrombin time

(redirected from International normalised ratio)
Also found in: Medical.

prothrombin time

[prō′thräm·bən ‚tīm]
(pathology)
A one-stage clotting test based on the time required for clotting to occur after the addition of tissue thromboplastin and calcium to decalcified plasma.
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References in periodicals archive ?
International Normalised Ratio variability of CoaguChek and TAS point-of-care testing whole blood prothrombin time monitors.
Comparison of Quick and Owren prothrombin time with regard to the harmonisation of the International Normalised Ratio (INR) system.
Comparison of Quick and Owren prothrombin time with regard to the harmonization of the International Normalised Ratio (INR) system.
This procedure does not comply with international practice, where the PI has been replaced by the international normalised ratio (INR).
Correction of instrument and reagent based differences in determination of the international normalised ratio (INR) for monitoring anticoagulant therapy.
Concerns over quality control for patients monitoring their own International Normalised Ratio (INR) for blood clotting time have not yet been addressed," notes Ms.
SA patients with irreversible atrial fibrillation (AF) who currently use warfarin as first-line treatment would typically need to have an average of 12 international normalised ratio (INR) tests per annum to maintain their INR within the range of 2 - 3.
Her international normalised ratio was unmeasurable nine hours post-bite with undetectable fibrinogen levels.
Accuracy and clinical utility of the CoaguChek XS portable international normalised ratio monitor in a pilot study of warfarin home-monitoring.
To be useful in this setting, we feel that the international normalised ratio (INR) of the point-of-care device should agree with the laboratory INR to within [+ or -] 0.

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