The nurse is reviewing the laboratory results for a client diagnosed with dehydration. Which result is most important to communicate to the health care provider?
a) Serum creatinine level of 2.8 mg/dL
b) Blood glucose level of 146 mg/dL
c) Serum potassium level of 5.0 mEq/L
d) Serum hemoglobin level of 15.7 g/dL