DiaPharma Bovine Thrombin is purified from bovine prothrombin activated by thromboplastin. For the determination of Antithrombin and Heparin, as well as other studies where a highly purified Thrombin is needed.

53 nkat thrombin correspond to approximately 25 IU and 21 NIH-U.

The activity of Thrombin can be measured using chromogenic substrate Chromogenix™ S-2238 (catalog number S820324).

Diapharma Thrombin

What is the 53 nkat vial of thrombin equivalent to in NIH units?
Based on an assay with S-2238™, for bovine thrombin, 1 NIH-U = 1.15 IU = 3.4 nkat. The DiaPharma bovine thrombin, 53 nkat (S-2238™) is equivalent to approximately 21 NIH-U or 25 IU.