Table 1 Estimated glomerular filtration rate equations

Cockcroft–Gault (CG) equation:

[(140 – Age) × Weight (kg) × (0.85 if female)] / 72 × SCr

SCr in milligrams per deciliter

Modification of Diet in Renal Disease (MDRD) equation:

186 × SCr^− 1.154 × Age^− 0.203 × (1.201 if black) × (0.742 if female)

SCr in milligrams per deciliter

Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation:

a × (SCr/b)^c × (0.993)^age

Where the variable “a” takes on the following values based on race and sex:

 • Black: women = 166; men = 163

 • White/other: women = 144; men = 141

The variable “b” takes on the following values based on sex:

 • Women = 0.7

 • Men = 0.9

The variable “c” takes on the following values based on sex and creatinine measurement:

 • Women:

  ○ if SCr ≤0.7 mg/dL ➔ − 0.329

  ○ if SCr > 0.7 mg/dL➔ − 1.209

 • Men:

  ○ if SCr ≤0.9 mg/dL ➔ − 0.411

  ○ if SCr > 0.9 mg/dL = − 1.209

SCr in milligrams per deciliter

Mayo Clinic quadratic equation:

exp [1.911 + 5.249/SCr − 2.114/SCr²–0.00686 × Age − (0.205 if female)

If SCr < 0.8 mg/dL than SCr = 0.8.

SCr in micromolar

Inulin clearance–based (IB) eGFR equation:

[(155 − Age) × Weight (kg) / Scr] × (0.85 if female)

SCr in micromolar