A charge nurse is reviewing morning laboratory reports for clients on the unit. The charge nurse should recognize that which result requires reporting to the provider?

A client with diabetes who has a fasting glucose level of 78 mg/dL

A postoperative client with a hemoglobin of 11.5 g/dL

A client on warfarin with an international normalized ratio (INR) of 5.2

A client receiving intravenous fluids who has a blood urea nitrogen (BUN) of 19 mg/dL