The accuracy of the glomerular filtration rate formula is related to factors such as the factors considered in the formula and the method of calculation. The main ones are MDRD formula, CG formula and CKD-EPI formula, among which the third one is relatively accurate. 1. Simplified MDRD formula: eGFR = 186 x (Scr, mg/dl) – 1.154 x (age, years) – 0.203 x 0.742 (female). This formula is simple to operate, but not very accurate. 2. CG formula: where male Ccr = (140 – age) x weight (kg) x 1.23/blood creatinine (umol/L), female Ccr = (140 – age) x weight (kg) x 1.03/blood creatinine (umol/L). This formula takes few factors into account and is not very accurate. 3. CKD-EPI formula: This formula is relatively accurate, in which male eGFR=144×(Scr/0.9)-0.411/1.209×(0.993) age, female eGFR=144×(Scr/0.7)-0.329/1.209×(0.993) age. All three of the above formulas for calculating glomerular filtration rate are estimates. Currently, the glomerular filtration rate calculated by renal ECT is relatively the most accurate. If patients find abnormal glomerular filtration rate, it is recommended to go to regular hospitals in time for consultation and standardized treatment under doctor’s guidance.