Pyuria

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- WBC's Normal: 0-4/HPF - WBC casts: Norm: none: per HPF - Discussion: - Leukocytes may come from anywhere in the urinary tract; - White cell casts indicate Renal parenchymal disease; - Pyelonephritis - Acute Glomerulonephritis - Intersitial inflammation of the kidney - It may be difficult to distinguish white cell casts from granular