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- WBCs 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