<prompt> Low complement levels seen inPSGNMPGNInfective endocarditisAll the above  <response>: Ref Harrison 16e p680 normal complement levelssuggest renal diseases such as immune complex disease, idiopathic rapidly progressive GN, and immunoglobulin G IgG or immunoglobulin A IgA nephropathy. Low C3 levels are found in almost all patients with acute poststreptococcal nephritis; C4 levelsmay be slightly low 