270. 000 antithrombinenheder (ATU) eller 18. 000 ATU pr. mg desirudin i henhold til WHO Second International Standard for alpha- thrombin.
* produced by recombinant DNA technology in yeast cells. ** corresponding to approximately 270,000 antithrombin units (ATU) or 18,000 ATU per mg of desirudin with reference to the WHO Second International Standard for alpha-thrombin.