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Ch 14 ppt renal
- 14. Differential Testing—Urinalysis Urine Results Prerenal Dysfunction Intrinsic Dysfunction Urine osmolality > 500 mOsm/L < 350 mOsm/L Urine sodium < 20 mmol/L > 40 mmol/L Fractional excretion of: Sodium (FENa) Less than 1% Greater than 1% Casts Few ++ Sediment Little ++