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prothrombin time assay

Go to external page http://purl.obolibrary.org/obo/OBI_0000802

An assay that measures the prothrombin ratio, which is the prothrombin time for a patient, divided by the result for control plasma. Most commonly the test is preformed using blood plasma. Blood is drawn into a test tube containing liquid citrate, which acts as an anticoagulant. An excess of calcium is added to enable the blood to clot again.Tissue factor (also known as factor III or thromboplastin) is added, and the time the sample takes to clot is measured optically as the prothrombin time, which is compared to a control sample.

Term info

Label

prothrombin time assay

definition source

url:http://en.wikipedia.org/wiki/Prothrombin_time@2009/10/06

editor preferred term

prothrombin time assay

example of usage

PMID:19696660#The prothrombin time (PT) was quantitatively determined using RecombiPlasTin (Instrumentation Laboratory Company, Lexington, Massachusetts, USA).

has curation status

http://purl.obolibrary.org/obo/IAO_0000120

term editor

Alan Ruttenberg