1.What is kidney biopsy? Kidney biopsy is often referred to as “kidney puncture”, that is, using a kidney biopsy gun, from the skin into the needle, penetrate about 1 cm of kidney tissue, fine needle in and out of kidney tissue before and after only 1 second. The test is safe and quick, and is a necessary test for kidney patients. 2.The purpose of kidney biopsy? The kidney tissue will be examined by light microscopy, electron microscopy and immunofluorescence to help diagnose the disease, understand the degree of kidney damage and determine the prognosis of the disease. Therefore, kidney biopsy pathology examination is of great value for the diagnosis of kidney disease, the selection or adjustment of treatment plan and the prognosis of the disease. 3.What patients need kidney biopsy? In clinical practice, this examination is required for patients with nephritis, nephrotic syndrome, hematuria or proteinuria. In addition, kidney biopsy is also required for kidney damage in diseases such as systemic lupus erythematosus and allergic purpura to determine the severity of kidney damage and to guide clinicians in the rational use of drugs. 4.Is kidney biopsy safe? Although percutaneous renal biopsy is a damaging examination method, with the improvement of puncture needle, positioning technology and the maturity of puncture technology, its success rate is high and safety is good. Since we carried out the examination of kidney biopsy, there was no 1 case of serious complications. 5.Does kidney biopsy have any effect on human body? The average number of glomeruli in the kidney tissue we take for a clear or accurate diagnosis is 20. And there are 1 million glomeruli in each side of the kidney in normal people. As long as there are 1 million glomeruli to meet the body’s needs, taking out a little kidney tissue has no adverse effects on the body. 6.Do I need to be hospitalized for kidney biopsy? The kidney biopsy must be performed in hospital, usually two days in advance, to carry out the necessary tests such as ultrasound to check the morphology of the kidney, routine blood and coagulation tests, and blood pressure measurement. After the procedure, bed rest for 24 hours is required, and strenuous activities are avoided for a week. Usually from hospitalization to the issuance of report and determination of treatment plan in about one week.