A nurse is reviewing lab results for a client with suspected…

A nurse is reviewing lab results for a client with suspected chronic kidney disease. Which of the following results would be most concerning in relation to kidney function?  Reference Ranges:   Sodium: 135-145 mEq/L   Creatinine: 0.6-1.2 mg/dL   Blood glucose: 70- 125 mg/dL  Hemoglobin: 12-15 g/dL