A nurse is reviewing the laboratory results of a client who is dehydrated. Which of the following BUN lab values should the nurse report to the provider?

A. 18 mg/dL: This value is within the normal adult BUN reference range (approximately 7–20 mg/dL). It does not indicate significant renal impairment or dehydration requiring immediate reporting. B. 13 mg/dL: This value is also within the normal range and would not typically warrant notifying the provider, as it reflects normal kidney function and hydration status. C. 10 mg/dL: This is a normal BUN level, indicating no apparent renal compromise or dehydration-related elevation, and does not require provider notification. D. 25 mg/dL: This value is above the normal range and may indicate dehydration, impaired renal function, or increased protein metabolism. Reporting elevated BUN allows the provider to assess for underlying causes and intervene appropriately to prevent complications.