If you calculate the plasma osmolality of a child with plasma Na+ 125 mEq/l, glucose 108 mg/ dl, and BUN (blood urea nitrogen) 140 mg/ dl, the most appropriate answer would be:: (A) 300 mOsm/kg, (B) 306 mOsm/kg, (C) 312 mOsm/kg, (D) 318 mOsm/kg
Answer is B. B i.e. 306 mOsm/kg