Whether it is urine test or blood test for nephritis, in fact, both urine test and blood test are needed, urine test is basic and blood test is extension, in addition to urinary ultrasonography. Through the urine test can initially determine the degree of nephritis, through the blood test can understand the nephritis has no combination of renal failure, through the urine test and blood test, but also on the nephritis is primary or secondary, make a preliminary judgment. Of course, it is best to do a kidney puncture biopsy to clarify the pathological type of nephritis, so as to make the most targeted treatment and understand the prognosis of nephritis.