คำนวณ GFR (Glomerular Filtration Rate)

Serum creatinine mg/dl
Age yrs
Sex
Body weight
optional
kgs

CKD-EPI formula

White or other race female
If serum creatinine (Scr) <= 0.7

\mbox{eGFR} = \mbox{144}\ \times \ \mbox{(SCr/0.7)}^{-0.329} \ \times \ \mbox{0.993}^{Age} \

If serum creatinine (Scr) > 0.7

\mbox{eGFR} = \mbox{144}\ \times \ \mbox{(SCr/0.7)}^{-1.209} \ \times \ \mbox{0.993}^{Age} \

White or other race male
If serum creatinine (Scr) <= 0.9

\mbox{eGFR} = \mbox{141}\ \times \ \mbox{(SCr/0.9)}^{-0.411} \ \times \ \mbox{0.993}^{Age} \

If serum creatinine (Scr) > 0.9

\mbox{eGFR} = \mbox{141}\ \times \ \mbox{(SCr/0.9)}^{-1.209} \ \times \ \mbox{0.993}^{Age} \

MDRD formula

\mbox{eGFR} = \mbox{186}\ \times \ \mbox{Serum Creatinine}^{-1.154} \ \times \ \mbox{Age}^{-0.203} \ \times \ {[1.210\ if\ Black]} \ \times \ {[0.742\ if\ Female]}

Cockcroft-Gault formula

eC_{Cr} = \frac { \mbox{(140 - Age)} \ \times \ \mbox{Mass (in kilograms)} \ \times \ [{0.85\ if\ Female}]} {\mbox{72} \ \times \ \mbox{Serum Creatinine (in mg/dL)}}

MDRD equation for Thais is as follows:

= 175 × Cr(Enz) ((-1.154)) × Age ((-0.203)) × 0.742 (if female) × 1.129 (if Thai).

Thai eGFR formula is:

= 375.5 × Cr(Enz) ((-0.848)) × Age ((-0.364)) × 0.712 (if female).

C-MDRD (modified for Chinese) equation:

= 175 × (Serum Creatinine)-1.234 × (Age)-0.179 × (0.79 if Female)

J-MDRD (modified for Japanese) equation:

= 194 × (Serum Creatinine)-1.094 × (Age)-0.287x (0.739 if Female)