Research Article

Estimated Glomerular Filtration Rate Correlates Poorly with Four-Hour Creatinine Clearance in Critically Ill Patients with Acute Kidney Injury

Table 1

Equations to estimate the Glomerular Filtration Rate (eGFR) mL·min−1 per 1.73 m2.

NameEquation

Creatinine
Cockcroft
and Gault
aMDRD
MDRD 6
MDRD 7
CKD-EPI FemalesCr ≤ 0.7
sCr > 0.7
MalesCr ≤ 0.9
sCr > 0.9
Cystatin C 1
Cystatin C 3
Cystatin C 4

Age (years); weight (kg); sCr: serum creatinine (mg·dL−1) (to convert from μmol·L−1 divide by 88.4); sUr: serum Urea (mg·dL−1); uUr: urine urea (g·dL−1); sAlb: serum albumin (mg·dL−1); cystatin C (mg·L−1); SDMA (nM·L−1).