A nurse is discussing laboratory values associated with the renal system with a newly licensed nurse. Which of the following statements by the newly licensed nurse indicates an understanding of the renal system?

B A GFR below 60 mL/min/1.73 m for three months or more suggests chronic kidney disease. D An increase in serum potassium can indicate hyperkalemia, which may be a sign of acute kidney injury. A The normal range for serum creatinine is 0.6 to 1.2 mg/dL for males and 0.5 to 1.1 mg/dL for females. C Blood urea nitrogen (BUN) levels should be between 7 and 20 mg/dL.