All of the following are signs of dehydration, except
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Progressive metabolic acidosis
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Urinary specific gravity > 1.010
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Urine osmolality < 300 mOsm/kg
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Urine sodium < 10 mEq/L
explanation
When dehydrated, patients with normal renal function will retain sodium and produce a concentrated urine. Urine osmolality is typically greater than 450 mOsm/kg in this setting. Urine sodium will be low, and specific gravity will be high.