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 values?

BUN is increased in clients who have severe dehydration and are at risk for AKI.

Specific gravity is decreased in clients who have hypovolemia.

Potassium levels are increased in clients who have polyuria.

Creatinine levels are decreased in clients who have acute kidney injury.