International collaborative study for the calibration of a proposed World Health Organization International Standard for thromboplastin, human, recombinant: a report from the International Federation of Clinical Chemistry and Laboratory Medicine (IFCC)-Scientific and Standardization Committee (SSC)/ISTH working group on prothrombin time/international no
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Background: The availability of International Reference Preparations for thromboplastins, later on referred to as International Standards (ISs) for thromboplastins is essential for calibration of prothrombin time (PT) measurement... ...
