Mayo Quadratic eGFR
The Mayo Clinic Quadratic equation is another formula which attempts to estimate GFR from variables including serum creatinine, age and sex. This formula appears to have better performance characteristics when used in patients with preserved renal function, though further validation is ongoing.
Rule et al.
Using serum creatinine to estimate glomerular filtration rate: accuracy in good health and in chronic kidney disease.
Annals of Internal Medicine 2004 December 21, 141 (12): 929-37
Rigalleau et al.
The Mayo Clinic quadratic equation improves the prediction of glomerular filtration rate in diabetic subjects.
Nephrology, Dialysis, Transplantation 2007, 22 (3): 813-8
The Mayo Quadratic eGFR calculator is created by QxMD.