Unfractionated heparin is used for both therapeutic anticoagulation and for maintaining vascular catheter patency via heparin locks and flushes.LMWH is used for therapeutic anticoagulation.

Our heparin order form had dose adjustment based on PTT ranges. However, a PTT of 32-42 last year is now equivalent to a PTT of 32-52 in terms of its relationship to control. Therapeutic range (1. ...