A physician needs your help to calculate the protamine dose on a patient who started hemorrhaging while on heparin. Patient has been receiving heparin at a dose of 13mls/hr for 2 hrs when the physician decides to use protamine to reverse the heparin. Heparin bag says concentration of 50 units/ml. The half-life of heparin is 60 minutes. 1 mg of protamine reverses 100 units of heparin.

How much protamine should be given to this patient?