-Maximum serum creatinine based on age as follows: 1 to < 2 years- 0.6 mg/dL; 2 to < 6 years - 0.8 mg/dL; 6 to < 10 years- 1 mg/dL; 10 to < 13 years- 1.2 mg/dL; 13 to 15 years- 1.5 mg/dL for boys and 1.4 mg/dL for girls.