DIN 58901-1:2000-03

The document is applicable to the determination of the factor VII coagulant activity in plasma by using the one-stage method; however, it is not applicable to factor VII concentrates. The purpose of this standard is to achieve comparable results for the factor VII C content in a given plasma sample. Essential precondtions for achieving this objective are a standardized procedure for calibration of the method, as well as the use of reference plasmas with a declared factor VII C proportion which has been determined by calibration against the International Standard of WHO (plasma) for factor VII C which is valid at the time of use.