The formulas for estimating glomerular filtration rate include simplified MDRD formula, C-G formula, CKD-EPI formula, and the glomerular filtration rate is affected by gender and age, and the more commonly used one is CKD-EPI formula.
Take the CKD-EPI formula as an example, this formula is more complicated and fully takes into account the influence of gender and age on glomerular filtration rate.
Male: Scr ≤ 0.9 ml/dl: eGFR = 144 × (Scr/0.9)-⁰. ⁴¹¹×(0.993) age; Scr>0.9ml/dl: eGFR=144×(Scr/0.9)-¹. ²⁰⁹ × (0.993) age.
Female: Scr ≤ 0.7 ml/dl: eGFR = 144 × (Scr/0.7)-⁰. ³²⁹×(0.993) age; Scr>0.7ml/dl: eGFR=144×(Scr/0.7)-¹. ²⁰⁹×(0.993) age.
Where Scr is serum creatinine (mg/dl). It is important to note that either formula estimates the glomerular filtration rate, and renal dynamic imaging is required to determine renal function if necessary.
Patients with abnormal glomerular filtration rate should go to the hospital in time and be treated under the guidance of specialized physicians.