DIN 58913-1:2000-03

The document is applicable to the determination of factor II and factor X coagulant activity in plasma and factor concentrates by the one-stage method. The purpose of this document is to achieve comparable results for the factor II C and factor X C content in a given specimen. Essential precondition for archieving this objective are a standardized procedure for calibration of the method, as well as the use of reference plasmas or reference concentrates with declared factor II C and factor X C proportion, respectively, which has been determined by calibration against the International Standard of WHO for factor II C and factor X C, respectively, which is valid at the time of use.