1.	Nephrotic Syndrome (NS) Primary Nephrotic Syndrome Minimal change disease - H Focal segmental glomerulosclerosis - H Membranous glomerulopathy - L Systemic Nephrotic Syndrome Diabetes mellitus - H Amyloidosis - L Systemic lupus erythematosus (WHO Class V)
2A.	Nephritic Syndrome - Low Serum Complement Primary Nephritic Syndrome Post-infectious glomerulonephritis (GN) Membranoproliferative GN - L Systemic Nephritic Syndrome Systemic lupus erythematosus (WHO Class III, WHO Class IV) - H Infectious endocarditis HCV-associated cryoglobulinemia
2B.	Nephritic Syndrome - Normal Serum Complement Primary Nephritic Syndrome IgA Nephropathy Hereditary Nephritis (Alport syndrome) - L Rapidly progressive GN (RPGN), ANCA associated, pauci-immune Systemic Nephritic Syndrome Lupus nephritis (WHO Class II) - H Anti-basement membrane disease (Goodpasture's Syndrome) - L Systemic vasculitis: Polyarteritis nodosa microscopic polyarteritis Wegener's granulomatosis Henoch Schoenlein Purpura Thrombotic thrombocytopenic purpura / Hemolytic uremic syndrome
3.	Acute Renal Failure Pre Renal - Decreased renal perfusion Renal Rapidly progressive GN (RPGN) Pauci-immune RPGN, ANCA-associated Anti-glomerular basement membrane disease (Goodpasture) - L Immune complex mediated RPGN:Systemic lupus erythematosus, IgANephropathy, etc. Acute tubulointerstitial diseases: Acute tubular necrosis (ATN) - H Acute interstitial nephritis (AIN) - H Post Renal - Obstruction
4.	Chronic renal failure