Prior to administration of heparin therapy to a client with deep vein thrombosis (DVT), which is the most important lab value to check?

Question

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Activated partial thromboplastin time (APTT) is the most important lab value to check before administering heparin therapy for a client with DVT, as it measures the effectiveness of the intrinsic pathway and the action of heparin.

Prior to Administration of Heparin Therapy to a Client with Deep