A nurse is reviewing the laboratory report of a newly admitted school-age child who has a fever. The nurse should identify that which of the following laboratory results is an indication of an infection and should be reported to the charge nurse immediately?

A. BUN level of 12 mg/dL is within normal range and does not indicate infection. B. Urine specific gravity of 1.014 is within normal range and does not indicate infection. C. A WBC count of 17,500/µL is elevated and indicates a possible infection, which should be reported immediately. D. Urine osmolality of 500 mOsm/kg is within normal range and does not indicate infection.