International normalized ratio
A system, commonly called the INR, established by the World Health Organization (WHO) and the International Committee on Thrombosis and Hemostasis for reporting the results of blood coagulation (clotting) tests. All results are standardized using the international sensitivity index for the particular thromboplastin reagent and instrument combination utilized to perform the test. For example, a person taking the anticoagulant ("blood thinner") warfarin (brand name: Coumadin) might optimally maintain a prothrombin time (a "pro time" or PT) of 2 to 3 INR. No matter what laboratory checks the prothrombin time, the result should be the same even if different thromboplastins and instruments are used. This international standardization permits the patient on warfarin to travel and still obtain comparable test results.

Medical dictionary. 2011.

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  • International Normalized Ratio — (INR) ist die Folgenormung zum Quick Wert. International wird die Blutgerinnungszeit anhand dieses Messwerts angegeben. Diese Standardisierung wurde erforderlich, da der Quickwert bei identischer, korrekter Messung aufgrund chargenabhängiger… …   Deutsch Wikipedia

  • International normalized ratio — Taux de prothrombine Le taux de prothrombine (TP, PR ou Prothrombine Ratio en anglais) est un test de laboratoire utilisé pour mesurer la coagulation sanguine. Il en explore la voie extrinsèque impliquant les facteurs de coagulation suivants… …   Wikipédia en Français

  • International normalized ratio — Véase también tiempo de protrombina. El International Normalized Ratio (INR) es una forma de estandarizar los valores obtenidos a través del tiempo de protrombina. Se usa principalmente para el seguimiento de pacientes bajo tratamiento… …   Wikipedia Español

  • International Normalized Ratio — n. INR, system that the World Health Organization and the International Committee on Thrombosis and Hemostasis established to report results of blood clotting tests …   English contemporary dictionary

  • Ratio Normalisé International — Taux de prothrombine Le taux de prothrombine (TP, PR ou Prothrombine Ratio en anglais) est un test de laboratoire utilisé pour mesurer la coagulation sanguine. Il en explore la voie extrinsèque impliquant les facteurs de coagulation suivants… …   Wikipédia en Français

  • Ratio normalisé international — Taux de prothrombine Le taux de prothrombine (TP, PR ou Prothrombine Ratio en anglais) est un test de laboratoire utilisé pour mesurer la coagulation sanguine. Il en explore la voie extrinsèque impliquant les facteurs de coagulation suivants… …   Wikipédia en Français

  • ratio — An expression of the relation of one quantity to another ( e.g., of a proportion or rate). SEE ALSO: index (2), quotient. [L. r. (ration ) a reckoning, reason, fr. reor, pp. ratus, to reckon, compute] absolute terminal innervation r. the number… …   Medical dictionary

  • Normalized Difference Vegetation Index — Negative values of NDVI (values approaching 1) correspond to water. Values close to zero ( 0.1 to 0.1) generally correspond to barren areas of rock, sand, or snow. Lastly, low, positive values represent shrub and grassland (approximately 0.2 to 0 …   Wikipedia

  • INR — international normalized ratio: the ratio of a patient s prothrombin time (PT) to a standardized ‘normal’ PT. For example, an INR of 2 indicates that a patient s blood takes twice the normal time to clot. It is used to monitor anticoagulant… …   The new mediacal dictionary

  • INR — • international normalized ratio [prothrombin time] …   Dictionary of medical acronyms & abbreviations

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