. Author manuscript; available in PMC: 2014 Nov 5.

Published in final edited form as: Kidney Int. 2010 Nov 24;79(5):555–562. doi: 10.1038/ki.2010.462

Table 3.

CKD EPI Equation for Estimating GFR on the Natural Scale Expressed for Race, Sex and Range of Serum Creatinine.

2-Level Race Equation
Race	Sex	Serum Creatinine	eGFR (ml/min/1.73 m²)
Black	Female	≤0.7 mg/dl	161 × (0.993)^Age × (Scr/0.7)⁻⁰³²⁹
Black	Female	>0.7 mg/dl	161 × (0.993)^Age × (Scr/0.7)^−1.209
Black	Male	≤ 0.9 mg/dl	163 × (0.993)^Age × (Scr/0.9)^−0.411
Black	Male	>0.9 mg/dl	163 × (0.993)^Age × (Scr/0.9)^−1.209
White and other	Female	≤0.7 mg/dl	139 × (0.993)^Age × (Scr/0.7)^−0.329
White and other	Female	>0.7 mg/dl	139 × (0.993)^Age × (Scr/0.7)⁻¹²⁰⁹
White and other	Male	≤ 0.9 mg/dl	141 × (0.993)^Age × (Scr/0.9)^−0.411
White and other	Male	>0.9 mg/dl	141 × (0.993)^Age × (Scr/0.9)^−1.209

4-Level Race Equation
Race	Sex	Serum Creatinine	eGFR (ml/min/1.73 m²)
Black	Female	≤0.7	167 × (0.993)^Age × (Scr/0.7)^−0.328
Black	Female	>0.7	167 × (0.993)^Age × (Scr/0.7)^−1.210
Black	Male	≤ 0.9	164 × (0.993)^Age × (Scr/0.7)^−0.415
Black	Male	>0.9	164 × (0.993)^Age × (Scr/0.7)^−1.210
Asian	Female	≤0.7	151 × (0.993)^Age × (Scr/0.7)^−0.328
Asian	Female	>0.7	151 × (0.993)^Age × (Scr/0.7)^−1.210
Asian	Male	≤ 0.9	149 × (0.993)^Age × (Scr/0.7)^−0.415
Asian	Male	>0.9	149 × (0.993)^Age × (Scr/0.7)^−1.210
Hispanic and Native American	Female	≤0.7	145 × (0.993)^Age × (Scr/0.7)^−0.328
Hispanic and Native American	Female	>0.7	145 × (0.993)^Age × (Scr/0.7)^−1.210
Hispanic and Native American	Male	≤ 0.9	143 × (0.993)^Age × (Scr/0.7)^−0.415
Hispanic and Native American	Male	>0.9	143 × (0.993)^Age × (Scr/0.7)^−1.210
White and other	Female	≤0.7	144 × (0.993)^Age × (Scr/0.7)^−0.328
White and other	Female	>0.7	144 × (0.993)^Age × (Scr/0.7)^−1.210
White and other	Male	≤ 0.9	141 × (0.993)^Age × (Scr/0.7)^−0.415
White and other	Male	>0.9	141 × (0.993)^Age × (Scr/0.7)^−1.210

CKD-EPI, Chronic Kidney Disease Epidemiology Collaboration. To convert GFR from mL/min/1.73 m2 to mL/s/1.73 m2, multiply by 0.0167. To convert serum creatinine from mg/dL to μmol/L, multiply by 88.4. CKD-EPI equation coefficients derived from pooled development and internal validation datasets. CKD-EPI 2 level equation expressed as a single equation: GFR = 141 × min(Scr/k, 1)^α × max(Scr/k, 1)^−1.209 × 0.993^Age × 1.018 [if female] × 1.159 [if Black] where Scr is serum creatinine, k is 0.7 for females and 0.9 for males, α is −0.329 for females and −0.411 for males, min indicates the minimum of Scr/k or 1, and max indicates the maximum of Scr/k or 1. 4 level equation, GFR = 141 × min(Scr/k, 1)^α × max(Scr/k, 1)^−1.210 × 0.993^Age × 0.993 [if female] × 1.16 [if Black] × 1.05 [if Asian] × 1.01 [if Hispanic and Native American] where Scr is serum creatinine, k is 0.7 for females and 0.9 for males, α is −0.412 for females and −0.328 for males, min indicates the minimum of Scr/k or 1, and max indicates the maximum of Scr/k. In the table, the multiplication factors for race and sex are incorporated into the intercept, resulting in different intercepts for age and sex combinations.