Coagulation — values and targets

Purpose of this sheet: essential lab result interpretation landmarks a nurse or licensed practical nurse in Quebec should keep in mind for clinical practice and for succeeding on the OIIQ or OIIAQ entry exam. Exam relevance: The OIIQ expects critical reading of lab results and identification of values requiring immediate nursing action. — Clinical landmarks — INR (no anticoagulation): 0.8–1.2 INR target on warfarin: 2.0–3.0 (most indications) aPTT: 25–35 s Heparin therapeutic aPTT: 1.5–2.5 × control Fibrinogen: 2.0–4.0 g/L D-dimer:

Clinical content reviewed by Ducamelle Louis, Registered Nurse