<prompt> Which of the following urinary findings is most characteristic of acute glomerulonephritis?ProteinuriaGranular castsErythrocyte castsHyaline casts  <response>: Hematuria with dysmorphic RBCs, RBC casts, and protein excretion 500 mgd is virtually diagnostic of glomerulonephritis. RBC casts form as RBCs that enter the tubule fluid and become trapped in a cylindrical mold of gelled Tamm-Horsfall protein.Harrissons Principles of Internal Medicine Ed 19 Pg 294 