If the anti-glomerular basement membrane antibody test is negative, it will rule out anti-glomerular basement membrane antibody positive glomerulonephritis. In nephritis, there is a type of nephritis called acute glomerulonephritis, which has more causes, one of which is positive for anti-glomerular basement membrane antibodies, which produce many antibodies in the body, one of which is called anti-glomerular basement membrane antibodies. This antibody damages the kidney and forms crescentic glomerulonephritis. The main manifestation of nephritis is the appearance of oliguria, anuria and renal failure within a short period of time, and the presence of urine protein and red blood cells in routine urine tests. If anti-glomerular basement membrane antibodies are found to be negative during this test, this possibility can be basically ruled out.