The precautions needed for kidney function tests include the following: 1. Because blood is drawn for the test, uric acid and urea nitrogen will be affected by dietary factors, so patients are advised to fast for the test, and they need to eat normally for a period of time before fasting and not to consume large amounts of protein; 2. Avoid strenuous exercise, because many of them will cause rhabdomyolysis after strenuous exercise, which may lead to myoglobin blockage The problem of renal tubules, causing abnormal kidney function, so avoid strenuous exercise; 3, to avoid the impact of drugs on kidney function, especially diuretics may affect the volume of urine, so try to avoid the application of diuretics before the examination.