A boy is suffering from acute pyelonephritis. Most specific urinary finding will be-: (A) W.B.C. casts, (B) Leucocyte esterase test, (C) Nitrite test, (D) Bacteria in gram stain
Answer is A. Answer is A (W.B.C) Presence of W.B.0 cast in urine of patients with suspected pyelonephritis is considered pathognomic. 'Leucocyte casts (W.B. C cast) are present in the urine of some patients with Pylonephritis and the detection of these is considered pathognomic'