The nurse is caring for a client who is taking warfarin and is scheduled for a cholecystectomy. Which laboratory result should the nurse report to the healthcare provider (HCP)? Reference Ranges: Hemoglobin (Hgb) [14 to 18 g/dL (140 to 180 g/L)] White Blood Cell (WBC) [5,000 to 10,000/mm3 (5 to 10 x 109/L)] International normalized ratio (INR) [0.8 to 1.1] Potassium [3.5 to 5.0 mEq/L (3.5 to 5.0 mmol/L)]