.16 For patients >49 yearn of age, the reference limit for Creatinine is approximately 13t higher for people identified as African-American. eGPR NON-APR. AMERICAN 66 eGPR AFRICAN AMERICAN 76 BUN/CREATININE RATIO NOT APPLICABLE 7-25 mg/dL 0.70-1.25 mg/dL OR • 60 mL/min/1.73m2 > OR ra 60 mL/m1n