Normal range of serum osmolality is (mOsm/Kg)

Normal range of serum osmolality is
(mOsm/Kg) ?
a) 280 - 300
b) 250 - 270
c) 300 - 320
d) 210 - 230
Correct Answer - A
Ans. A . 280 - 300
Normal osmolal concentration (osmolality of plasma is 290
mOsm/Kg.