The maximum urinary concentration capacity in full-term neonates is
A full-term infant can concentrate his urine to a maximum of 700-800 mOsm/kgAn older child can concentrate 1200-1400 mOsm/kgA newborn can dilute his urine to a minimum of 50 mOsm/kg much like an older child.(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition)
350-450 mOsm/litre
700-800 mOsm/litre
900-1000 mOsm/litre
>1000 mOsm/litre
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