The maximum urinary concentration capacity in full-term neonates is: (A) 350-450 mOsm/litre, (B) 700-800 mOsm/litre, (C) 900-1000 mOsm/litre, (D) >1000 mOsm/litre
Answer is B. 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)