Koepke J A, Gilmer P R, Triplett D A, O'Sullivan M B
Am J Clin Pathol. 1977 Jul;68(1 Suppl):191-4.
A method for the comparison of prothrombin time systems using single large lots of lyophilized plasma in the College of American Pathologists Surveys is presented. Systematic biases for prothrombin time methods as well as for thromboplastins have been measured, and their use allows a very accurate (within 2.25%) prediction of the prothrombin time for the great number of prothrombin time systems presently being used in the United States.
本文介绍了一种在美国病理学家学会调查中使用大量冻干血浆比较凝血酶原时间系统的方法。已测量了凝血酶原时间方法以及凝血活酶的系统偏差，并且其应用能够非常准确地（误差在2.25%以内）预测美国目前大量使用的凝血酶原时间系统的凝血酶原时间。
