Are you ready for the NCLEX?Which lab test is most commonly used to monitor the effects of a continuous heparin infusion?64%Next Correct Incorrect aPTT is used to monitor and adjust heparin therapy. Which lab test is most commonly used to monitor the effects of a continuous heparin infusion? International normalized ratio (INR) Platelet count Activated partial thromboplastin time (aPTT) Prothrombin time (PT) 64%