I'm a first semester nursing student. In our assessments/care plans, we have to list labs and the reason why a lab value is abnormal. My patient is on Coumadin; her INR was WNL (2.51) for pts on anticoagulant therapy, but her PT was off-the-charts high - 28.84. The lab reports that the norm is 9.2-12.7.
Is PT not calculated for patients on anticoagulants - which would make her PT "normal" for her since she's on Coumadin? Or is there something I'm totally missing here?
Thanks in advance!