Nephritic GN?,”Nephritic GN usually presents with red blood cells, white blood cells, casts (red blood cell and/or white blood cell), and variable degrees of proteinuria. Mild GN presents with a nephritic sediment without renal insufficiency or nephrotic syndrome. Causes include IgA nephropathy, lupus nephritis, and thin basement membrane disease. Moderate-to-severe GN has nephritic sediment, decreased GFR, and variable degree of proteinuria. Etiologies include postinfectious, lupus, membranoproliferative GN (MPGN), rapidly progressive GN (RPGN), and vasculitis (eg
cryoglobulinemia).”