The kidney function is not necessarily normal when the urine result is normal. The kidney health examination of a patient, whether it is kidney function examination or urine routine examination, the two cannot replace each other, as follows: 1. There is a slight difference between different hospitals, mainly based on blood creatinine measurement; 2, urine routine test: through the extraction of urine specimens from patients for determination, mainly to see whether there is proteinuria, hematuria, white blood cells, bacteria count and other items. Therefore, normal urine routine may not necessarily lead to normal kidney function.