Urinalysis shows RBC casts; likely source is -: (A) Kidney, (B) Ureter, (C) Bladder, (D) Urethra
Answer is A. RBC casts are indicative of glomerular disease , i.e, the source is from kidney. WBC casts are strongly suggestive of pyelonephritis. Ref : Davidson - 22nd edn - pg no. 468.