There are many tests for glomerulonephritis, including blood tests, urine tests, renal puncture biopsy, renal ultrasound and renal CT. Blood tests usually include routine blood test, blood biochemistry, immune marker test, glycosylated hemoglobin test, hepatitis B and C virus and human papillomavirus test, serum complement C3 and C4 level, etc., which can initially determine the cause and severity of glomerulonephritis. Urine examination includes urine routine and sediment examination, 24-hour quantitative urine protein test, and urine phase contrast microscopy. Patients with glomerulonephritis will generally have positive urine protein, positive urine occult blood, and abnormal 24-hour urine protein quantification. Renal puncture examination can clarify the pathological type of nephritis, which is very important for the diagnosis and treatment of glomerulonephritis and the judgment of prognosis. Renal ultrasound and renal CT can observe the morphology of the kidney, the thickness of the cortex and whether there are substantial lesions to judge the progress of the disease. After suffering from glomerulonephritis, patients should carry out corresponding examinations according to the doctor’s instructions, and follow the doctor’s instructions after clear diagnosis.