EGFR is the estimation of glomerular filtration rate, its normal range is 80~120ml/min, it reflects the glomerular filtration function of human body. Glomerular filtration function cannot be measured directly, it is a value assessed by calculating toxin markers such as creatinine in the blood. Glomerular filtration rate fluctuates within a certain range depending on age, gender, weight and other factors, so its value ranges from 80 to 120 ml/min. Generally speaking, the glomerular filtration rate is higher in men than in women, but it is higher in pregnant and breastfeeding women than in normal people, in infants than in young people, and in young people than in old people. There is a natural decrease in glomerular filtration rate with age. In general, the glomerular filtration rate decreases by an average of about 10 ml/(min-1.73m²) every 10 years after the age of 30. However, due to the living environment and other factors, there are individual differences, and the actual situation will be different for each person. If EGFR is found to be over the normal value range, you need to go to the hospital in time and take treatment according to the doctor’s advice to avoid delaying your condition.