The normal range of serum osmolarity is: (A) 350-375, (B) 200-250, (C) 270-285, (D) 300-320
Answer is C. Normal serum osmolarity ranges from 275 to 295 mOsm/L It is used to monitor hyponatremia,and other conditions Reference : guyton and hall12 Ed pg no: 45,46,47