prothrombin time

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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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5] Nonstandard abbreviations: POCT, point-of-care testing; PT, prothrombin time; INR, International Normalized Ratio; ISI, International Sensitivity Index; TAS, Thrombolytic Assessment System; PT-NC, prothrombin time, noncitrated; MNPT, mean normal PT; ECAA, European Concerted Action on Anticoagulation; and PR, prothrombin ratio.
The INR is therefore a more precise way than other methods of accurately recording the prothrombin ratios and the degree of coagulation.

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