1.Urinary routine and its sediment microscopy. 2.Proteinuria, especially large amount of proteinuria, should be checked regularly for 24-hour protein quantification; some need to have urine protein molecular weight measurement, immunofixation electrophoresis test of blood and urine. 3.Patients with hematuria should have urine red blood cell bitemporal examination, and those suspected of surgical hematuria should also have urine to find tuberculosis bacilli and urine cytology examination, etc. 4.Renal function test, including glomerular filtration function, three renal tubules, urinary acidification function, urinary osmolality test, etc. 5.Renal ultrasound examination, and ultrasound examination of renal artery or renal vein should be performed for suspected renal vascular lesions. If necessary, CT/magnetic and renal arteriogram should be performed. 6.Nuclear kidney dynamic examination can be performed to evaluate the fractional renal function. 7.Patients with abnormalities of blood lipids and uric acid should have the relevant indexes reviewed regularly. 8.Patients with secondary renal disease should have the indexes related to the primary disease such as systemic lupus erythematosus, hepatitis, multiple-issue myeloma, amyloidosis, antiphospholipid syndrome, etc. tested regularly. 9. For adult patients with GFR less than 60 ml/(min?1.73m2) (CKD stage 3-5) should be tested regularly for relevant comorbidities: (1) Electrolytes (potassium, sodium, chloride) and carbon dioxide binding capacity. (2) Anemia-related tests: routine blood tests, serum iron, total iron binding capacity, ferritin, and fecal occult blood should be tested if anemia is present. (3) Tests related to bone metabolism and vascular calcification: serum calcium, phosphorus, alkaline phosphatase, whole segment parathyroid hormone (iPTH), bone mineral density, X-ray plain film, etc.