A nurse is caring for a client who has dehydration due to diarrhea. Which of the following findings should the nurse report to the provider?

A. BUN 18 mg/dL is incorrect. A BUN (blood urea nitrogen) level of 18 mg/dL is within the normal range (typically 7–20 mg/dL) and does not indicate immediate concern in this context. An elevated BUN could indicate dehydration, but this level is not significantly elevated. B. Serum creatinine 1.0 mg/dL is incorrect. Serum creatinine levels are also within normal limits for most adults, which is around 0.6–1.2 mg/dL, and this finding does not indicate a problem. C. Urine output 12 mL/hr is correct. A urine output of 12 mL/hr is low and indicates oliguria, which is a concern in the context of dehydration. The normal urine output for an adult is at least 30 mL/hr. A decrease in urine output suggests that the kidneys are not receiving adequate blood flow, which could indicate severe dehydration and requires immediate attention from the provider. D. Urine specific gravity 1.020 is incorrect. Urine specific gravity of 1.020 is within the normal range (typically 1.005–1.030) and indicates that the kidneys are concentrating urine appropriately, which is not a concerning finding in this case.